TLC The Einstein Approximation. Stuck on the solution to a physics problem, Sheldon tries different methods to change his thinking, including working at The Cheesecake Factory. S3, Ep14 2026-09-18 The Large Hadron Collision. When Leonard is offered a trip to Switzerland on Valentine's Day to see a particle accelerator, he must choose between taking Penny or Sheldon. S3, Ep15 2026-09-18 The Excelsior Acquisition. An appearance in traffic court comes at the worst possible time for Sheldon, the same day Stan Lee is appearing at the comic book store. S3, Ep16 2026-09-18 The Precious Fragmentation. The guys go to a garage sale and find a ring from the Lord of the Rings films, and the rare find threatens their friendship. S3, Ep17 2026-09-18 The Pants Alternative. Sheldon's fear of speaking in front of large groups threatens his ability to accept an award, so the gang tries to help him prepare for the big night. S3, Ep18 2026-09-18 Thanksgiving V. Dr. Goodwin and Uncle Rusty's wife and kids show up unannounced for Thanksgiving. Brick goes to extreme measures to have lime green Jello salad. S5, Ep7 2026-09-18 The Kiss. When Frankie's sister asks her to house-sit, Frankie and Mike jump at the opportunity to have a romantic, kid-free weekend in an upscale home. S5, Ep8 2026-09-18 The Christmas Tree. Sue's severe allergic reaction to the Christmas tree threatens to ruin her holiday. Brick runs a mini-Ponzi scheme in an attempt to pay back a debt. S5, Ep9 2026-09-18 The Sin Of Greed. The university tries to recruit Sheldon, through George. Georgie gets a job working for Meemaw's new boyfriend. Mary decides to rid her home of greed. S3, Ep8 2026-09-18 A Party Invitation, Football. Mary gets Pastor Jeff involved when Sheldon isn't invited to Billy's birthday party. George, meanwhile, has 'male-bonding time' with Dr. Sturgis. S3, Ep9 2026-09-18 Teenager Soup. Sheldon fakes being sick to avoid a swim test at school. Meanwhile, Dr. Sturgis spies on Meemaw's new boyfriend. S3, Ep10 2026-09-18 The Wheaton Recurrence. Sheldon squares off at the bowling alley against nemesis Wil Wheaton. Leonard's miffed over Penny's response when he says, 'I love you.' S3, Ep19 2026-09-19 The Spaghetti Catalysis. Following Leonard and Penny's break up, Sheldon tries to hide from Leonard and the gang that he had a friendly spaghetti dinner at Penny's. S3, Ep20 2026-09-19 The Plimpton Stimulation. Sheldon hosts a visiting female physicist, but her intelligence seems matched by her libido. S3, Ep21 2026-09-19 The Staircase Implementation. A squabble over the thermostat setting leads to Leonard going over to Penny's and recounting the story of how he met and moved in with Sheldon. S3, Ep22 2026-09-19 The Lunar Excitation. Howard and Raj set Sheldon up on an Internet dating site. Penny discovers that she can't go back to dating dumb jocks after dating Leonard. S3, Ep23 2026-09-19 The Robotic Manipulation. Howard uses a robotic arm for his own pleasure. Sheldon goes on a date with Amy Farrah Fowler, and Penny finds herself accompanying them. S4, Ep1 2026-09-19 Cruciferous Veg Amplification. Sheldon calculates that he'll be dead before technology exists to download his consciousness into a robot, so he goes on a healthy-living binge. S4, Ep2 2026-09-19 The Zazzy Substitution. Sheldon breaks up with Amy Farrah Fowler, and the guys worry when he starts replacing her with cats. S4, Ep3 2026-09-19 It's Better To Bend Than Break. Paula gets a surprise visitor. Catie stresses over wedding prep. Mallorie offers Rasit a compromise. Shea's daughters worry about their inheritance. S12, Ep15 2026-09-19 My Third Eye. Jaclyn has a lump on the back of her head that causes her emotional distress. Shane has a growth between his eyes that could put him in danger at his electrician job. S3, Ep12 2026-09-19 Thanksgiving V. Dr. Goodwin and Uncle Rusty's wife and kids show up unannounced for Thanksgiving. Brick goes to extreme measures to have lime green Jello salad. S5, Ep7 2026-09-19 The Kiss. When Frankie's sister asks her to house-sit, Frankie and Mike jump at the opportunity to have a romantic, kid-free weekend in an upscale home. S5, Ep8 2026-09-19 The Christmas Tree. Sue's severe allergic reaction to the Christmas tree threatens to ruin her holiday. Brick runs a mini-Ponzi scheme in an attempt to pay back a debt. S5, Ep9 2026-09-19 Shoulder Boulder. Stacey's shoulder growth prevents her from being the playful teacher she once was. Matthew worries that his mysterious shin rash may be dangerous. S3, Ep13 2026-09-19 Paul's Journey. Paul weighs in at 700-lbs and his girlfriend struggles with how his weight limits their life together. He worries the relationship won't survive his time in Houston. S9, Ep9 2026-09-19 The Fiancé Show. Reality TV star Olivia Buckland wants a dress to match her fab figure and big personality. Meanwhile, two fiancés try to influence what frocks their brides choose. S2, Ep2 2026-09-19 Is Anyone Listening To Me? Kayla's family threatens to take over her appointment. Milan considers getting a customised dress. Prashanthi's fitting doesn't go according to plan. S20, Ep2 2026-09-19 Teleshopping. 2026-09-19 Teleshopping. 2026-09-19 A Perfect Score. Sheldon moves in with Dr. Sturgis for the weekend to experience college life. A lonely Mary tries to bond with the other Coopers during his absence. S2, Ep18 2026-09-19 A Political Campaign. Unhappy that school funds are going toward football rather than academics, Sheldon decides to run for class president. S2, Ep19 2026-09-19 A Proposal And A Popsicle. Georgie is thrilled when Veronica stays at the Coopers' for a few days. Meanwhile, Meemaw and Dr. Sturgis celebrate their one-year anniversary. S2, Ep20 2026-09-19 A Broken Heart. The Coopers help a broken-hearted Pastor Jeff through a rough patch in his marriage. Meanwhile, Sheldon pressures church members for donations. S2, Ep21 2026-09-19 A Swedish Science Thing. Sheldon invites the entire school to a party for the Nobel Prize announcements. Meanwhile, Meemaw learns more about Dr. Sturgis's past. S2, Ep22 2026-09-19 Quirky Eggheads. After Dr. Sturgis experiences a nervous breakdown, Mary worries Sheldon is headed down a similar path. Georgie finds he has a knack for sales. S3, Ep1 2026-09-19 Broom Closet. Without Dr. Sturgis's university class, Sheldon takes his education into his own hands. Mary helps Pastor Jeff avoid temptation with his girlfriend. S3, Ep2 2026-09-19 An Entrepreneurialist. Sheldon leaves town after a fight with Meemaw and his parents. Meanwhile, Georgie tries to impress Veronica with his new business venture. S3, Ep3 2026-09-19 The White Asparagus Triangulation. Sheldon is over-exuberant that Leonard finally has a girlfriend matching his high standards. S2, Ep9 2026-09-19 The Vartabedian Conundrum. Leonard seeks Penny's counsel when his relationship with Stephanie takes. Sheldon's hypochondriac tendencies get the better of him. S2, Ep10 2026-09-19 The Bath Item Gift Hypothesis. Sheldon irks the gangs with his obsession with proper Christmas gift protocol. Leonard's crushed when Penny dates a colleague of his. S2, Ep11 2026-09-19 The Killer Robot Instability. Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the guys are depending on him for. S2, Ep12 2026-09-19 The Friendship Algorithim. Looking to get friendly with Barry Kripke to gain access to a piece of high-tech lab equipment, Sheldon develops a flowchart process to make friends. S2, Ep13 2026-09-19 The Financial Permeability. When Sheldon loans money to Penny so she can pay her rent, it leads to Leonard coming face-to-face with her ex, Kurt. S2, Ep14 2026-09-19 The Maternal Capacitance. A visit from Leonard's mother ends up bringing him and Penny closer. S2, Ep15 2026-09-19 The Cushion Saturation. Paintball leads to a squabble between Sheldon and Penny as well as romance between Howard and Leslie. S2, Ep16 2026-09-19 The Terminator Decoupling. The gang is thrilled to see Summer Glau is also aboard their train to San Francisco. Sheldon frets over having forgotten a paper he wants to present. S2, Ep17 2026-09-19 The Work Song Nanocluster. Penny's business selling hair accessories out of her apartment gets out of hand when an over-caffeinated Sheldon takes charge. S2, Ep18 2026-09-19 The Dead Hooker Juxtaposition. Penny feels threatened when another sexy woman moves into the apartment building and angered when she senses the guys are being taken advantage of. S2, Ep19 2026-09-19 The Hofstadter Isotope. A fellow comic book enthusiast's hitting on Penny leads to Leonard, Raj and Howard going to a bar's Ladies' Night. S2, Ep20 2026-09-19 The Vegas Renormalization. Leonard and Raj take Wolowitz to Las Vegas to help him get over his break-up. Sheldon locks himself out and has only one other place to stay: Penny's. S2, Ep21 2026-09-20