NBC Comedy Vault

Jack encounters his former babysitter (guest star Demi Moore) and lapses into childlike behavior. Rosanna Arquette and Leigh-Allyn Baker also guest star.

Will and Jack's transformation of Karen's cousin Barry is complete; Karen duels with Beverly during a silent auction for charity.

Jealous Will spots Barry (Dan Futterman) disappearing with Jack; Karen trades places with Rosario to woo a handsome handyman (Bruno Campos).

Will forms an anti-romance club with Karen and his boss (Gene Wilder).

Will attempts to surprise Grace for her birthday by sneaking Leo back from Africa; Jack and Karen take their mission to keep Leo's return secret too seriously.

Karen's search for a roommate leads to a high-maintenance individual, who shares many of her eccentricities; Grace and Jack intervene when Will uses painkillers as a crutch.

Karen hires a somewhat immature divorce attorney (guest star Macaulay Culkin) to oppose Will in court.

When Karen's ex-husband dies, she and her British rival (Minnie Driver) have a contest of wills; Leo (Harry Connick Jr.) is needed in Guatemala.

Karen confronts her ex-husband's mistress before inviting everybody for a ceremony on her yacht; Grace suffers from jealousy after meeting her husband's sexy co-worker.

Will and Jack awake in a precarious position while at sea; Grace discovers love letters in Leo's bag from a female colleague.

Grace is vexed when she learns that Leo's ex-girlfriend (Mira Sorvino) is intimately acquainted with Will.

Karen invites Grace and Leo to play tennis at her exclusive club, but her fierce playing style drives Grace away.

Jack lands a speaking role opposite James Earl Jones in an off-Broadway play and gives the veteran actor some pointers.

Will takes Leo on shopping sprees and for high tea to help him rekindle his love of the city; Karen coaches Jack for the annual gay spelling bee.

Will takes his mother for an afternoon stroll and bumps into an attractive bachelor (Dylan McDermott); Karen continues her lifelong quest to hunt down hubby-stealing Lorraine.

An unorthodox doctor (Jack Black) gives Karen her annual physical; Jack begs Will to support his decision to become a student nurse.

Will urges Grace to stay in New York so they can spend some time together; Karen strong-arms Jack's nursing teacher into letting him skip class but still make the grade.

Will catches the eye of a female diner after being stood up; Grace bumps into a man (Tom Everett Scott) with whom she once shared a forgettable encounter; Karen runs into her nemesis, Candice Bergen.

A weak bladder forces Will to entrust Grace with his place in line for Barry Manilow tickets; Grace's mother (Debbie Reynolds) cancels their annual mother-daughter shopping trip to have dinner with Jack.

Grace's freeloading sister (Geena Davis) comes to town to launch her latest business enterprise; Karen spurns Lyle (John Cleese), then changes her mind after Lorraine (Minnie Driver) expresses her disapproval.

A rich plastic surgeon (guest star Hal Linden) tries to buy Will's affection; Grace boycotts a new restaurant.

Will's new client (Dave Foley) falls for Jack; Grace and Karen discover hidden money while trying to fix the plumbing in Leo's cabin.

Will is the only single man in a cooking class full of couples, including Jack and his new boyfriend (Dave Foley); Karen's mother (Suzanne Pleshette) asks Grace to decorate her apartment.

Will and Grace begin a business venture selling apartments; Jack runs into his former acting mentor, Zandra; Karen and Lyle (John Cleese) try to renew romance.

Will and Grace try to break up Jack and Stuart (Dave Foley) so they can sell the apartment for a higher price; Karen demands that Lyle (John Cleese) discipline his daughter (Minnie Driver).

Real estate entrepreneurs Will and Grace face formidable competition on the East Side from a lesbian couple (Edie Falco, Chloë Sevigny); John Edward gives Karen some psychic guidance.

Jack and Grace stumble upon Stuart (Dave Foley) watching a movie matinée in the company of another man; Will tries to teach Karen how to drive.

Grace advises Will to play hard to get with his new boyfriend (Bobby Cannavale); Jack and Karen despair after learning their favorite TV series will be going off the air.

Will introduces his new boyfriend (Bobby Cannavale) to overly critical Grace; Karen tells Jack that their friendship will change after her wedding.

At Tina's (Lesley Ann Warren) urging, Will tries to find out if there is a new woman in his father's life; Jack's son decides to try out for the high-school cheerleading squad.

On the eve of his graduation from nursing school, Jack turns to Will for help writing his commencement address.

Karen moves her wedding to Las Vegas, where Jennifer Lopez agrees to sing at the ceremony.

Karen moves her wedding to Las Vegas, where Jennifer Lopez agrees to sing at the ceremony.

Karen recruits Jack to help her get Jennifer Lopez to listen to Karen's new song; Grace takes out her frustration over her cheating husband on Will.

Jack wangles his way into Janet Jackson's (guest starring as herself) performance tour as a backup dancer.

As she attempts to steal doughnuts at an AA meeting, Grace has a surprise reunion with Val (Molly Shannon); Will and Jack attend a gay television focus group meeting.

Grace accuses Will of being too nice to strangers; Jack has trouble at his new company when his co-workers mock him about his Cher doll.

Despite the fact that Will has never had a happy birthday, his new relationship with Vince (Bobby Cannavale) gives him hope that this one will be.

Will convinces Jack to aid a local gay-bookstore owner to save his store from closing.

Will and Grace decide to invite Vince and Nadine (Kristin Davis) over, but they quickly learn that, despite similarities in friendship, they are polar opposites.

After a great date with someone else, Grace comes home to a garbled message from Leo; Karen and Jack try to set each other up, but things go awry.

Will, Grace, Jack and Karen go on a road trip for Grace's getaway weekend, but Jack and Karen hate the car ride and bail on the plan.

Vince's mother cannot make her traditional holiday feast, so Will volunteers to make a special meal, but Vince's mother refuses to give him any credit; Jack gives Vince's sister (Jamie-Lynn DiScala) pointers on keeping secrets.

Vince's mother is unable to make her traditional holiday feast, so Will volunteers to make a special meal, but Vince's mother refuses to give Will any of the credit; Jack gives Vince's sister (Jamie-Lynn DiScala) pointers on keeping secrets.

Grace accidentally breaks a treasured figurine at Will's mother's (Blythe Danner) holiday party and blames it on another guest.

An old classmate (Jeff Goldblum) tries to get revenge on Karen by becoming the president of Walker Inc.; Will and Grace run into Vince and a co-worker while playing hooky from work.

Will is reluctant to bring Vince to a dinner party at his boss's (Lily Tomlin) home, fearing it will scratch his chances of making partner at the firm.

When Scott Woolley (Jeff Goldblum) tries to get Grace to fire Karen by impersonating a restaurant owner, the women plan a trap for him.

Although Grace tries to ignore St. Valentine's Day, she winds up with a hunky greeting-card writer (Ed Burns); Karen's former nemesis (Jeff Goldblum) tries to win her heart by showering her with gifts.

Grace drags Will along on her first date with Nick (Edward Burns); Karen tries to set Jack up on a date with the neighborhood bird enthusiast (Luke Perry), but things don't quite go as she has planned.

When Will agrees to fire Karen's pastry chef, he becomes involved in a love triangle that the baker created.

When Jack convinces Will that they need a change of scenery, they buy an apartment in an up-and-coming gay community.

Will is jealous when his no-nonsense therapist (guest star Sharon Stone) becomes fast friends with Grace.

Grace convinces Karen to attend her father's (Alan Arkin) birthday party; Karen entertains herself by spending time with Martin's friend Burt (Lee Majors).

Grace's near-death experience prompts her to write her will and jolts Will into making a life-altering career choice.

When Will's writing career fizzles, Malcolm (Alec Baldwin) makes him another job offer; Grace's old college flame (Eric Stoltz) gives her a job decorating his new hotel.

Will becomes suspicious of his new job when he finds himself in an empty office with a German shepherd and a Russian-speaking thug.

Grace contemplates an affair with a married man (Eric Stoltz); Jack begins his new career as a talk-show host; Will continues to hide from Karen the fact that Stan is alive.

When Will suspects that Karen is more upset about Stan being alive than she is letting on, he makes it his mission to help her heal emotionally.

Jack learns that Will has never learned how to swim, so he makes it his mission to teach him.

Jack tells Karen he believes she belongs with Stan, not Malcolm (Alec Baldwin).

Jack brings Baby Glenn (Jason Biggs), who gained notoriety in the '80s after being trapped in a hole for days, to Will's charity auction and carnival.

Grace and Will spot her ex-husband, Leo, on their plane to London; Will charms a pair of gay flight attendants into letting Grace into first-class to talk with Leo.

Jack's decision to move makes Will take a close look at their friendship; Karen and Grace are invited to the memorial celebration for Beverly's (Leslie Jordan) deceased wife.

When Grace finds it impossible to please her mother, Jack offers to help, believing no one knows how to be a good daughter like a gay son.

When the gang spends Christmas at the home of Will's mother, Marilyn Truman (Blythe Danner), Grace gets romantic with Will's brother.

"The Sound of Music Sing-Along" has come to town and no one is more excited than Grace; she plans for her and Will to attend the musical in character-like style by dressing up in costumes.

All of New York society attend Karen's birthday party, but Will, Grace and Jack embarrass themselves and get stuck in the bathroom with the birthday girl.

Will insists that Grace turn down a job offer from his former boss, Margot, who has asked Grace to redecorate the law firm.

Will and Grace dread a dinner date with Rob and Ellen, but the identity of their waiter (Bobby Cannavale) eclipses their friends' big news.

Will, Karen and Grace travel to Los Angeles to support Jack as he accepts an award for Best Local Cable Guy Talk Show Host.

Karen ignores Grace's plea for a low-key wedding and plans a huge affair, hiring Hall & Oates to perform "Maneater" at the ceremony.

Nervous but optimistic Grace decides it is time to tell Leo (Harry Connick Jr.) she is pregnant with his child.

Ecstatic, Jack coerces Will into coming out with him to a cowboy bar to meet his new boyfriend, Travis.

A large corporation takes over OutTV, completely revamping Jack's talk show and giving him a conservative co-host, Britney Spears.

Jack loses his hosting job and vows never to return to acting; Will has a showdown with his father.

At his father's funeral, Will grapples with their last encounter; Grace begins to doubt her potential to be a good mother.

Will and Grace attend childbirth classes; Karen seeks comfort from very busy Jack.

Will and Grace settle into the idea of raising the baby together; Vince's plans to move into a brownstone with Will do not include Grace; Jack's show premieres; Will must choose between his commitment to Grace and his relationship with Vince.

Will and Grace make a decision about their future together; Jack continues his never-ending search for love; Karen tries to find happiness in Stan's absence.

Will and Grace make a decision about their future together; Jack continues his never-ending search for love; Karen tries to find happiness in Stan's absence.

Will and Grace both falter when their political beliefs are put to the test; Jack and Karen help Will and Grace hide their secret shame from each other, but the truth finally comes out.

Will and Jack try to date younger guys but find it challenging; Grace and Karen experience a crisis that reveals Grace's true feelings about Karen.

Grace finds that the emergency contact called by her doctor's office is ex-husband Leo, not Will; Jack takes on a new job; Karen befriends a 12-year-old girl in the Bronx.

Jack is stunned to learn that his estranged son has a son of his own; Grace and Karen behave badly with the hot new guy at work.

Grace gets a job decorating a string of boutique hotels for an obnoxious hotel mogul; Will is surprised at his reaction to becoming senior partner; Jack owns half of a winning lottery ticket.

Karen has trouble dealing with a personal tragedy; Will, Grace, and Jack try to intervene; Will and Grace's new business relationship begins to show signs of stress.

Will, Grace, Karen and Jack wish they could have experienced Christmas in old New York, but realize the past was not quite as romantic or open to diversity as they pictured it.

Will and Grace try to convince themselves they are okay with dating the same man; Jack and Karen get an annoying commercial jingle stuck in their heads and must seek medical attention.

Will and Grace's old friend Larry decides he's in love with Will; Jack's first day as a Lyft driver doesn't go as planned; Karen tries to help Jack but ends up needing help rather than giving it.

Grace tries to prevent Will from making a scene at his ex-boyfriend's wedding; Jack's wedding hook-up comes with strings attached.

Jack's intimacy issues are challenged by a closeted boyfriend; Will and Grace sell their new line of bedding on live television.

Grace is horrified to realize that she's dated three men from the same family; Will and Karen get on each other's nerves at the office until they bond over watching -- and producing -- their own little telenovela.

A baby shower makes Grace and Will question their life choices; Karen and Jack find a way to combine child labor with musical theater.

Against Jack's advice, Will rekindles a relationship with his first love; Grace reluctantly fights for Karen's civil rights when a bakery refuses to make a cake she wants.

Grace brings Will for support when she goes home to celebrate her deceased mother's birthday; Jack's faith in love is crushed after a breakup; a secret in Karen's marriage is uncovered.

Grace's father and Will's mother end up making a surprising and upsetting connection; Jack rebounds from his breakup with a new love; Karen must decide between her husband and her lover.

Grace's accidental run-in with a curmudgeon she follows on Twitter smacks of romance; Jack makes a terrible impression on Estefan's family after a numbing cream incident; Will helps Karen protect her most prized possession.

After Will and Grace's parents get married, big changes are afoot for the gang: Will gets a teaching job and a beard, Grace decides to run for office, Jack prepares to settle down with Estefan and Karen goes missing.

When Jack learns what song his grandson Skip intends to perform at his church talent show, he fears for his safety; Karen faces off with Beverley Leslie over her piece of border wall; Grace and Noah try to have sex; Will unleashes his inner Queen.

Now a certified psychic, Jack channels Rosario to help Karen open her heart to love again; Grace learns love means having to say she's sorry.

While on a road trip with her father, Grace reveals a past secret, changing their relationship forever; legendary drag queen Miss Coco Peru emcees a lip sync monologue throw down to determine who will be Jack's best man, Will or Karen.

When Will discovers Noah has a child, he promises to keep the secret from Grace; Karen and Jack's relationship is tested when she fires him from the play she's producing and replaces him with Jon Cryer.

Grace unintentionally meets Noah's daughter Katie; Will's mom Marilyn visits after the death of her beloved dog, but doesn't get the emotional support she expects; Jack argues with his rec center boss, Theo.

In order to land a handsome TV news anchor with a penchant for dim, silly men, Will seeks advice from Jack on how not to be himself; Karen enlists Grace to help get photos of her ex Stan's affair with Lorraine Finster.

Will, Karen and Jack unknowingly take hallucinogens, which cause Will and Jack to wonder whether they're soul mates and have Karen giving her final performance as Mrs. Stanley Walker; a high-powered client takes up with Grace's sister Janet.

Will and Grace's plan to win over Will's new boss goes awry when he drops dead in their apartment; Estefan and Karen's mutual dislike puts Jack in full damage control mode at his birthday dinner.

Will uses a mock trial in an attempt to repair the rift between Karen and her stepdaughter; Grace and Jack decide to go on a diet together but changing their eating habits proves harder than they thought.

Malcolm enlists Grace to help him win back Karen's affections; Will's flirtation at work lands him in an ethical dilemma; Jack's passion for performing is reignited by a chance encounter with Susanna, the sister of his former acting teacher.

Will gives local newscaster McCoy Whitman a second chance -- with Jack's help; Grace's campaign hits a snag when the deciding vote belongs to her nemesis Val; campaign manager Karen attempts to secure the winning vote by any means necessary.

Jack's insistence that Will be nicer to Estefan backfires; Grace unknowingly knocks over a prominent figure; when Karen discovers Noah plans to kill off the main character of her favorite romance novel, she forces him to rewrite the story.