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A battle ensues when Leonard and Sheldon argue over who will get custody of their shared belongings. Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas. After Penny feels that Leonard is taking her for granted, she decides to go on a spa weekend with Amy, leaving Sheldon to play the unlikely peacemaker.

Leonard and Howard try to distract Sheldon with tickets to a historic railway when he slows the progress of their guidance system. Dean Norris returns as Colonel Williams. Sheldon and Amy have their first fight since moving in together, after he shares intimate details of their relationship with people at the university. Also, Penny considers joining Leonard at Comic-Con. Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Howard as well as Amy on the same day.

Also, Bernadette nears the end of her maternity leave and must return to work. Howard and Bernadette have a hard time leaving Halley in daycare when Bernadette returns to work. Also, Amy is offered a summer position as a visiting researcher. The show's father of invention, prop master Scott London, reveals the origins of some of the most iconic props from the first 10 seasons.

Show creator Chuck Lorre, executive producer Steve Molaro, along with the cast discuss the highlights of Season 10 and how family played a key role in this season's storylines. Show creator Chuck Lorre, executive producer Steve Molaro and cast discuss the show's newest addition, baby Halley Wolowitz. Description The universe of Drs. Entertainment Inc. All Rights Reserved. The Big Bang Theory, Season 3. The Big Bang Theory, Season 6.

The guys, in need of a fourth member, ask Leslie Winkle. She at first declines, but accepts on hearing they are opposing Sheldon, who has often criticized her research and gender. Sheldon's team is named AA Army Ants , an unintentional pun on Alcoholics Anonymous , and comprises Sheldon who forbids answers from his teammates , the 3rd floor janitor, the lunch lady, and her son or possibly her butcher.

PMS win when Sheldon, unable to answer the last question, refuses to accept the janitor's answer, which is actually correct: he explains that despite working as a janitor in America, he was a physicist in the former Soviet Union. In an online auction, Leonard buys a full-sized replica of the time machine from the film The Time Machine , believing it to be a miniature. The men's efforts to move the cumbersome object into the apartment cause Penny to lose a work shift, and she lashes out at them for their obsession with childish memorabilia.

This upsets Leonard, who decides to sell all his collectibles. His friends try to dissuade him, but they also want his collectibles and argue over who should get what.

Sheldon later accuses Penny of hypocrisy, pointing out her own love of such things as Hello Kitty or Care Bears. Penny apologizes to Leonard and dissuades him from abandoning the things he loves; he decides to keep his belongings. His hope of a relationship with her is thus very briefly renewed until her current boyfriend Mike appears and pulls her into her apartment. Sheldon later has nightmares of being attacked by Morlocks, and persuades Leonard to return the time machine replica.

Sheldon introduces his twin sister Missy to the guys, and all are attracted to her. Raj decides to take part in a drug trial to cure his inability to talk to women, and Leonard insists Missy stay with them at the apartment. Predictably, the men all awkwardly flirt with her, so Penny comes to her rescue.

Leonard, hoping for an advantage over Howard and Raj, convinces Sheldon he is Missy's guardian as concerns her choice of partner. Sheldon deems all three guys to be unsuitable for her. On learning of Sheldon's plan to find her a suitable mate, Missy confronts her brother, and after she kicks him in the groin he agrees she can date whoever she likes. She turns down Leonard, and then Howard, who fails to charm her with simple conjuring tricks.

Finally Raj goes to talk to Missy, who shows interest in him, but the drug wears off and he is unable to speak to her, forcing Raj to leave defeated. Penny learns that Leonard has never had a birthday party, as his parents did not believe in celebrating anything other than achievements. She decides to throw him a surprise party, and blackmails Sheldon to join in by threatening to draw a smiley face on each of his mint condition comic books.

However, on the day of the party, Penny discovers Sheldon has not yet bought a present, so she has to drive him to a computer store to buy one. Meanwhile, Howard has the task of keeping Leonard out of his apartment before the party. Howard pretends to eat a peanut bar, to which he is allergic, so that Leonard will drive him to the emergency room. However, Sheldon's lack of focus at the computer store means Howard has to distract Leonard even longer, and he eventually actually eats the peanut bar, swelling up in a severe allergic reaction.

After several hours at the hospital, Howard and Leonard arrive back at the apartment to find the party has ended, though Penny does kiss Leonard.

Penny furiously breaks up with Mike after he posts details of their sex life on his blog, while Sheldon, determined to prove that the Chinese restaurant uses oranges instead of tangerines in their 'Tangerine chicken', asks Howard to teach him Mandarin.

When Penny laments her choice of men, Leonard awkwardly asks her out. After a few days, both worry that this relationship could ruin their friendship, and each seeks Sheldon's advice. When Leonard arrives to pick up Penny, he mentions the thought experiment and kisses her passionately. She concludes that 'the cat is alive' and they leave for dinner.

Leonard and Penny go to the Chinese restaurant, but they leave before entering on seeing Sheldon arguing with the owner in Mandarin, and doing it very badly, disturbing the patrons.

Tom Shales of The Washington Post gave the show a positive review, saying ' Big Bang is the funniest new sitcom of the season'. David Bianculli of New York Daily News criticized the dialogue, particularly when the male characters explain jokes, writing that 'People tuning in to Big Bang may not all be Mensa members, but they won't all be idiots, either', [33] Henry Goldblatt of Entertainment Weekly criticized the premise and plot of early episodes, writing that 'To call this a one-joke sitcom would be a stretch', [34] and Tim Goodman of San Francisco Chronicle criticized the stereotypes presented in the characters, and wrote that 'the writing here is so moronic and the situations so forced and mundane'.

Cast [ edit ] Main [ edit ] Johnny Galecki as Dr. Leonard Hofstadter Jim Parsons as Dr. Wolowitz Brian George as Dr. Koothrappali Alice Amter as Mrs. Sheldon Cooper return home to find aspiring actress Penny is their new neighbor across the hall from their apartment. Sheldon thinks Leonard, who is immediately interested in her, is chasing a dream he will never catch. Leonard invites Penny to his and Sheldon's apartment for Indian food, where she asks to use their shower since hers is broken.

While wrapped in a towel, she gets to meet their visiting friends Howard Wolowitz, a wannabe ladies' man who tries to hit on her, and Rajesh Koothrappali, who is unable to speak to her as he suffers from selective mutism in the presence of women. Leonard is so infatuated with Penny that, after helping her use their shower, he agrees to retrieve her TV from her ex-boyfriend Kurt. Penny, feeling bad, offers to take the guys out to dinner, initiating a friendship with them.

Title reference : Sheldon having Big Bran cereal with higher fiber content after Penny finds out her apartment has been rearranged. Title reference : One of the names Leonard was considering for his cat. Title reference : Sheldon creating glow-in-the-dark fish during his period of unemployment. A line of genetically modified fluorescent fish using the green fluorescent protein and variants from jellyfish, the GloFish, was actually developed and began selling in Title reference : Sheldon switching his favorite burger restaurant.

Title reference : Leonard's Halloween costume. Title reference : The scene where Leonard, Sheldon, and Raj are at the Chinese restaurant and do not know what to do with the spare dumpling which Howard would normally have eaten. Title reference : The drink a Grasshopper that enabled Raj to speak to women.

Title reference : The rift between Leonard and Sheldon. Title reference : Sheldon's urine measuring cup, which is the same cup Leonard uses to mix pancake batter. Title reference : Sheldon's proposed duplication of Jerusalem. Title reference : The Batman cookie jar 'Bat Jar' given to Sheldon when he is kicked out of the original team.

Title reference : Leonard getting rid of his collectibles, which Howard refers to as 'Nerdvana'. Title reference : Howard saying he would kill his rabbi with a pork chop to be with Missy, who was not Jewish hence a shiksa. Title reference : Howard's serious peanut allergy. Title reference : The Chinese Tangerine chicken which Sheldon believed was actually prepared with oranges.

May 5, Archived from the original on May 25, Retrieved May 16, Chuck and I are both fans. Chuck's idea. Archived from the original on October 8, Comic Book Resources. November 20, Archived from the original on December 7, Retrieved December 3, The Futon Critic. May 14, October 19, February 20, Archived from the original on February 16, USA Today.

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Archived from the original on January 6, Retrieved January 5, CBS Interactive. Archived from the original on November 21, The Washington Post. Archived from the original on December 31, Gannett Company. New York Daily News. Entertainment Weekly. Time Inc. San Francisco Chronicle. TV Guide. MSN TV. The Wolowitzes' life gets complicated when Stuart starts bringing his new girlfriend home. Also, Penny and Leonard talk about starting a family while Koothrappali explores an arranged marriage.

Sheldon won't tell anyone why he's never mentioned Tam, his childhood best friend, so Leonard takes matters into his own hands. Amy doesn't have time to work with Sheldon on super asymmetry, so he goes to great lengths to ensure she's available. Koothrappali doesn't want Wolowitz to join him in hosting a show at the planetarium. Also, Leonard is shocked that Penny doesn't remember their first kiss. Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money.

Also, Bernadette turns the backyard playhouse into a hideaway from her husband and kids. Sheldon tries to bond with Amy's father, but when Wolowitz lures Mr. Fowler away with magic tricks, Sheldon has no choice but to bond with Mrs. Also, Koothrappali and Anu try to get physical for the first time.

Sheldon and Amy are devastated after learning from a Russian paper that super asymmetry has already been theorized and disproved. Bernadette wants to beat Howard in a popular video game. A VHS tape from Sheldon's past inspires him and Amy not to give up when they're still feeling down about their theory being disproven. Bernadette turns into a pageant mom when she tries to help Howard with his Magic Castle audition.