CTV COMEDY (East) Channel HDTV (CMDYHD)

Valentine's Day plans include Lily surprising Marshall, Robin bonding with girlfriends, and Ted and Zoey figuring out where they stand in their relationship. Meanwhile, Barney calls Feb. 13 "Desperation Day," a holiday for desperate women. (Repeat).

Marshall becomes obsessed with saving the environment after he sees a documentary about garbage; Ted runs into the Captain; and Robin makes Barney confront his feelings for the woman who was his first Valentine's Day date. (Repeat).

Barney realizes he has heartfelt affection for Nora, and he thinks that something is wrong with him; and Robin dates a guy who acts like a dog. (Repeat).

(Repeat).

Penny's plans for a surprise birthday party for Leonard, who doesn't usually mark the occasion, get thrown off-kilter when Sheldon gets a chance to live out one of his biggest dreams. Althea: Vernee Watson. Jan: Judith Moreland. Dan: Ronald Hunter. Stan: Chuck Carter.

In the first-season finale, Leonard asks Penny out on a date after she breaks up with her boyfriend. To prepare for the big night, Leonard practices the date the day before with the guys.

Leonard tries a scientific approach to seducing Penny, while the gang celebrates Halloween at Stuart's comic-book store. Former astronaut Buzz Aldrin has a cameo. (Repeat).

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Also, Leonard is shocked that Penny doesn't remember their first kiss. (Repeat).

In the second-season opener, Penny surprisingly turns to Sheldon as a confidant after her disastrous first date with Leonard. Mrs. Wolowitz: Carol Ann Susi.

It's Thanksgiving at the Conners and Jackie must come to terms with her mother, Beverly, becoming ill. Meanwhile, Darlene is on the job hunt which proves to be more difficult than anticipate (Repeat).

Penny's plans for a surprise birthday party for Leonard, who doesn't usually mark the occasion, get thrown off-kilter when Sheldon gets a chance to live out one of his biggest dreams. Althea: Vernee Watson. Jan: Judith Moreland. Dan: Ronald Hunter. Stan: Chuck Carter.

In the first-season finale, Leonard asks Penny out on a date after she breaks up with her boyfriend. To prepare for the big night, Leonard practices the date the day before with the guys.

In the second-season opener, Penny surprisingly turns to Sheldon as a confidant after her disastrous first date with Leonard. Mrs. Wolowitz: Carol Ann Susi.

Leonard tries a scientific approach to seducing Penny, while the gang celebrates Halloween at Stuart's comic-book store. Former astronaut Buzz Aldrin has a cameo. (Repeat).

Valentine's Day plans include Lily surprising Marshall, Robin bonding with girlfriends, and Ted and Zoey figuring out where they stand in their relationship. Meanwhile, Barney calls Feb. 13 "Desperation Day," a holiday for desperate women. (Repeat).

Marshall becomes obsessed with saving the environment after he sees a documentary about garbage; Ted runs into the Captain; and Robin makes Barney confront his feelings for the woman who was his first Valentine's Day date. (Repeat).

Barney realizes he has heartfelt affection for Nora, and he thinks that something is wrong with him; and Robin dates a guy who acts like a dog. (Repeat).

(Repeat).

Leonard tries a scientific approach to seducing Penny, while the gang celebrates Halloween at Stuart's comic-book store. Former astronaut Buzz Aldrin has a cameo. (Repeat).

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Also, Leonard is shocked that Penny doesn't remember their first kiss. (Repeat).

Darlene receives a promotion at her company, but she quickly learns the fancy title is not all it's cracked up to be. Meanwhile, when Louise loses her job at Casita Bonita, an opportunity arises to work with Jackie at the Lunch Box. (Repeat).

It's Thanksgiving at the Conners and Jackie must come to terms with her mother, Beverly, becoming ill. Meanwhile, Darlene is on the job hunt which proves to be more difficult than anticipate (Repeat).

Brent becomes self-conscious during guitar lessons; Wanda starts writing an anonymous column for the Howler; Hank tries to show off his strength. (Repeat).

Karen does volunteer work at a home for seniors; Davis talks to Wanda about mixed CDs; Brent shows Hank and Lacey his team spirit. (Repeat).

New Year's resolutions challenge Wanda, Hank and Karen; Oscar learns a lesson in Canadian citizenship from Brent and Emma; Davis tries to avoid coffee duty at the police station. (Repeat).

Hank embarrasses Brent when the two travel to the city to meet their favorite comic-book writer; Lacey's discarded clothing makes its way to Karen's closet; Emma and Oscar install a troublesome security system in their home. (Repeat).

Canadian English version of the game show where unsuspecting members of the public hail a cab and find they're playing for money - if they can keep answering questions correctly before they reach their destination. Too many incorrect answers and they may just be walking the rest of the way.

Canadian English version of the game show where unsuspecting members of the public hail a cab and find they're playing for money - if they can keep answering questions correctly before they reach their destination. Too many incorrect answers and they may just be walking the rest of the way.

Brent becomes self-conscious during guitar lessons; Wanda starts writing an anonymous column for the Howler; Hank tries to show off his strength. (Repeat).

Karen does volunteer work at a home for seniors; Davis talks to Wanda about mixed CDs; Brent shows Hank and Lacey his team spirit. (Repeat).

New Year's resolutions challenge Wanda, Hank and Karen; Oscar learns a lesson in Canadian citizenship from Brent and Emma; Davis tries to avoid coffee duty at the police station. (Repeat).

Hank embarrasses Brent when the two travel to the city to meet their favorite comic-book writer; Lacey's discarded clothing makes its way to Karen's closet; Emma and Oscar install a troublesome security system in their home. (Repeat).

Canadian English version of the game show where unsuspecting members of the public hail a cab and find they're playing for money - if they can keep answering questions correctly before they reach their destination. Too many incorrect answers and they may just be walking the rest of the way.

Canadian English version of the game show where unsuspecting members of the public hail a cab and find they're playing for money - if they can keep answering questions correctly before they reach their destination. Too many incorrect answers and they may just be walking the rest of the way.

Brent becomes self-conscious during guitar lessons; Wanda starts writing an anonymous column for the Howler; Hank tries to show off his strength. (Repeat).

Karen does volunteer work at a home for seniors; Davis talks to Wanda about mixed CDs; Brent shows Hank and Lacey his team spirit. (Repeat).

New Year's resolutions challenge Wanda, Hank and Karen; Oscar learns a lesson in Canadian citizenship from Brent and Emma; Davis tries to avoid coffee duty at the police station. (Repeat).

Hank embarrasses Brent when the two travel to the city to meet their favorite comic-book writer; Lacey's discarded clothing makes its way to Karen's closet; Emma and Oscar install a troublesome security system in their home. (Repeat).

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules. Meanwhile, Harris welcomes a guest at Dan and Louise's. (Repeat).

Valentine's Day plans include Lily surprising Marshall, Robin bonding with girlfriends, and Ted and Zoey figuring out where they stand in their relationship. Meanwhile, Barney calls Feb. 13 "Desperation Day," a holiday for desperate women. (Repeat).

Marshall becomes obsessed with saving the environment after he sees a documentary about garbage; Ted runs into the Captain; and Robin makes Barney confront his feelings for the woman who was his first Valentine's Day date. (Repeat).

Barney realizes he has heartfelt affection for Nora, and he thinks that something is wrong with him; and Robin dates a guy who acts like a dog. (Repeat).

(Repeat).

A jealous Leonard reacts to Penny's new guy by rebounding with Leslie (Sara Gilbert). Eric: Travis Schuldt.

Sheldon shows Penny the joys of online gaming, creating an addict in the process. Gablehauser: Mark Harelik. Blaine: Tyler Olson. Tom: Mark Hames.

Raj gets an ego boost after winning some fame from a magazine article and risks his friendship with Leonard by trying to win over Penny.

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules. Meanwhile, Harris welcomes a guest at Dan and Louise's. (Repeat).

The holidays are approaching and Dan meets his mother-in-law for the first time. Elsewhere, Darlene helps Becky with a parenting problem. (Repeat).

Barney finally meets his dad, and the pals think of things they should all know by now as adults, but don't. (Repeat).

Marshall quits his job to volunteer for an environmental organization; and Ted and Zoey's opposing views on the Arcadia are troubling for their relationship. (Repeat).

Barney attempts to bond with his dad and asks his friends to lie about their lives in order to make his life sound more exciting. (Repeat).

Ted plans a romantic weekend with Zoey, while Marshall and Barney bicker over the fate of the Arcadian Hotel. (Repeat).

A jealous Leonard reacts to Penny's new guy by rebounding with Leslie (Sara Gilbert). Eric: Travis Schuldt.

Sheldon shows Penny the joys of online gaming, creating an addict in the process. Gablehauser: Mark Harelik. Blaine: Tyler Olson. Tom: Mark Hames.

Season 11 begins with Amy giving Sheldon an answer to his marriage proposal. Meanwhile, Howard and Bernadette struggle with some unexpected news. (Repeat).

Leonard angers the university and the entire physics community when he gives an embarrassing radio interview. Meanwhile, Amy and Bernadette bond over having to hide their success from Sheldon and Howard. (Repeat).

Conan visits new friends he's met through his podcast, "Conan O'Brien Needs a Fan," where he dives deep with listeners from around the world.

A jealous Leonard reacts to Penny's new guy by rebounding with Leslie (Sara Gilbert). Eric: Travis Schuldt.

Sheldon shows Penny the joys of online gaming, creating an addict in the process. Gablehauser: Mark Harelik. Blaine: Tyler Olson. Tom: Mark Hames.

Raj gets an ego boost after winning some fame from a magazine article and risks his friendship with Leonard by trying to win over Penny.

Season 11 begins with Amy giving Sheldon an answer to his marriage proposal. Meanwhile, Howard and Bernadette struggle with some unexpected news. (Repeat).

Conan visits new friends he's met through his podcast, "Conan O'Brien Needs a Fan," where he dives deep with listeners from around the world.

Barney attempts to bond with his dad and asks his friends to lie about their lives in order to make his life sound more exciting. (Repeat).

Ted plans a romantic weekend with Zoey, while Marshall and Barney bicker over the fate of the Arcadian Hotel. (Repeat).

Season 11 begins with Amy giving Sheldon an answer to his marriage proposal. Meanwhile, Howard and Bernadette struggle with some unexpected news. (Repeat).

Leonard angers the university and the entire physics community when he gives an embarrassing radio interview. Meanwhile, Amy and Bernadette bond over having to hide their success from Sheldon and Howard. (Repeat).

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules. Meanwhile, Harris welcomes a guest at Dan and Louise's. (Repeat).

The holidays are approaching and Dan meets his mother-in-law for the first time. Elsewhere, Darlene helps Becky with a parenting problem. (Repeat).

Stray cats become problematic for Oscar, who's tasked with evicting them from Emma's garden, Lacey rallies Hank and Davis to save Dog River Days; Brent pretends to sustain an injury in a bid to teach Wanda a lesson. (Repeat).

Davis offends Karen with his blond jokes and must endure sensitivity training; Lacey and Brent try to debunk superstitions for Hank; Wanda assumes Emma's identity. (Repeat).

A week without television compels the residents of Dog River to find alternatives, so Karen and Davis go on the radio to help people cope. (Repeat).

Wanda inherits a motorcycle from her uncle; Lacey cons Davis and Karen into helping her relocate; Hank's new greeting bothers Oscar and puts him in a precarious position with Emma. (Repeat).

Stolen crab apples spell trouble for Hank; Wanda and Davis pen complaint letters in a bid to acquire free stuff; Oscar must win over a charades team. (Repeat).

Wanda and Oscar vs. a beehive. Also: Hank's toy robot prompts Davis to order one online; Lacey expands Brent's palette and inadvertently transforms him into a food critic. (Repeat).

The friends band together to help Sheldon face his fear of driving. Octavia: Octavia Spencer. Lourdes: Livia Trevino.

The gang is puzzled by a young grad student's attraction to Sheldon. Ramona: Riki Lindhome. Kathy: Emily Happe.

It's an all-out war between Penny and Sheldon when he bans her from the apartment for what she thinks are petty infractions.

A smitten Wolowitz thinks he's found his soul mate---until the woman (Sara Rue) meets Leonard.

Sheldon is ecstatic when Leonard begins dating Stephanie (Sara Rue), who meets all of Sheldon's seemingly impossible standards.

Leonard's relationship with Stephanie is moving too fast for him, so he runs to Penny for advice. Stephanie: Sara Rue.

Penny wounds Wolowitz with a comment about his love life, prompting him to abandon friends who need him for a fighting-robot contest. Barry Kripke: John Ross Bowie.

Here's a conundrum to baffle the guys: Sheldon's intelligence, which renders him socially awkward, is also the source of his new scientific procedure for making friends.

Sheldon helps Penny with a financial crisis, but his solution leads to a confrontation between Leonard and Penny's burly ex-boyfriend Kurt (Brian Patrick Wade).

Leonard suffers through a dreadful visit from his mother (Christine Baranski) that ends up bringing him and Penny closer.

A paintball game has Penny and Sheldon engaging in their own personal battle and Leslie and Wolowitz finding romance.

The guys' trip to San Francisco takes a detour once they learn that actress Summer Glau (appearing as herself) is on their train. Astrophysicist George Smoot also has a cameo.

Penny starts a hair-product business that suffers when her friends, particularly Sheldon, become involved.

Penny develops a rivalry with a pretty woman who moves into the building.

The friends band together to help Sheldon face his fear of driving. Octavia: Octavia Spencer. Lourdes: Livia Trevino.

The gang is puzzled by a young grad student's attraction to Sheldon. Ramona: Riki Lindhome. Kathy: Emily Happe.

It's an all-out war between Penny and Sheldon when he bans her from the apartment for what she thinks are petty infractions.

A smitten Wolowitz thinks he's found his soul mate---until the woman (Sara Rue) meets Leonard.

Sheldon is ecstatic when Leonard begins dating Stephanie (Sara Rue), who meets all of Sheldon's seemingly impossible standards.

Leonard's relationship with Stephanie is moving too fast for him, so he runs to Penny for advice. Stephanie: Sara Rue.

Penny wounds Wolowitz with a comment about his love life, prompting him to abandon friends who need him for a fighting-robot contest. Barry Kripke: John Ross Bowie.

Here's a conundrum to baffle the guys: Sheldon's intelligence, which renders him socially awkward, is also the source of his new scientific procedure for making friends.