Episode 1: Pilot (Pilot)
Episode 2: The Big Bran Hypothesis (Hypothesis of Brains)
Episode 3: The Fuzzy Boots Corollary (Corollary of The Cat)
Episode 4: The Luminous Fish Effect (Effect of Fish Bright)
Episode 5: The Hamburger Postulate (The Hamburger Postulate)
Episode 6: The Middle Earth Paradigm (Paradigm of the Middle Earth)
Episode 7: The Dumpling Paradox (The Paradox of steamed dumplings)
Episode 8: The Grasshopper Experiment (The Experiment Cocktail)
Episode 9: The Cooper-Hofstadter Polarization (Cooper-Polarization Hofstdter)
Episode 10: The Decay Loobenfeld (The Decline of Loobenfeld)
Episode 11: The Pancake Batter Anomaly (The anomaly of the batter for pancakes)
Episode 12: The Jerusalem Duality (The City Replica)
Episode 13: The Bat Jar Conjecture (Conjecture of The Bat-Biscuit)
Episode 14: The Nerdvana Annihilation (Time Machine)
Episode 15: The Pork Chop indeterminacy (Factor Twin Sister)
Episode 16: The Peanut Reaction (Reaction to Peanuts)
Episode 17: The Tangerine Factor (Factor Mandarin)
Leonard and Sheldon are trying to make some extra money by visiting a sperm bank for geniuses, but give up and go back to their apartment. When they get home they find that a beautiful new neighbor, Penny, has packed up the other side of the landing. Make friends with her in the best way they know, asking it to eat Indian food. Penny asks the boys a favor, and they promise to do whatever he needs to ... even if it means going by her ex-boyfriend to take his TV. Unfortunately for Penny, returning without TV, and even more unfortunately for Leonard and Sheldon, both also lose their pants.
Episode 02: The Big Bran Hypothesis (Hypothesis of Brains)
Sheldon and Leonard are from Penny to deliver a package that arrived for her. Sheldon is deeply disturbed to see how it appears messy and disorganized the apartment of the girl. Later in the night, while Leonard is sleeping, Sheldon sneaks in the apartment of Penny to clean and organize it. Leonard finds out and tries to stop him, but Sheldon is obsessed. When Penny wakes up and finds out what Sheldon has done, is furious.
Episode 03: The Fuzzy Boots Corollary (Corollary of The Cat)
When Leonard sees Penny kissing a guy at the door of the house is destroyed. The guys convince him to ask a colleague to get out, but when he tries and is brutally downloaded from a girl genius, even more depressed. Wolowitz takes him over the sauce, where he met all his conquests ... shame that the sonne are all eighty-five! Leonard finally decides to ask Penny out to dinner with him, and when he thinks he is doing prorpio progress, she is confident that it is too early to begin to make new appointments.
Episode 04: The Luminous Fish Effect (Effect of Fish Bright)
Sheldon is fired from the university when it's out of his head over the edge, he does not feel smart enough. The change in his condition casts him into a downward spiral of depression which the boys try to cure his mother calling. When mom comes to visit, the boys realize that it is completely different as if waiting for: they never thought that Sheldon was related to a woman so simple and sweet. But the visit achieved its purpose, and the woman is able to report Sheldon successfully on track.
Episode 05: The Hamburger Postulate (The Hamburger Postulate)
While they are eating at the restaurant where he worked Penny, Leonard and Sheldon run into Leslie, a fellow scientist who works with Leonard. Leslie suggests Leonard to play in his string quartet, but what I really want to embrace him and bring their knowledge to another level. When Sheldon returns home to find a tie on the door of Leonard, Penny goes to ask what it means. When Leonard dcopre that Sheldon has told Penny about his meeting with Leslie gets scared, imagining a love triangle between two women and himself, but is disappointed when he discovers that everything that Leslie was interested in was a one night thing.
Episode 06: The Middle Earth Paradigm (Paradigm of the Middle Earth)
The children go to Penny's Halloween party. Leonard ends up being humiliated by ex-boyfriend while Sheldon, Wolowitz and Koothrappali trying desperately to make a mark on the social scene, but with poor results. After the party, Penny, a little 'drunk and sad after reviewing its former ends up kissing Leonard.
Episode 07: The Dumpling Paradox (The Paradox of steamed dumplings)
Penny's promiscuous friend comes to town and Wolowitz weaves a relationship with her, leaving the guys without their fourth wheel. Sheldon for a while 'berserk because his world was troubled, and Penny has to stay with the boys in their apartment. absorbed by another, the boys find themselves left without a fourth member to their group, and, in desperation, they ask Penny to join their team at Halo.
Episode 08: The Grasshopper Experiment (The Experiment cocktail)
Koothrappali is overwhelmed by the fact that his parents have arranged a blind date, but discovers that it can actually talk to members of the fairer sex after a few drinks, however, complications arise when his beautiful date seems more interested in Sheldon. Penny began her new job as a bartender, then Koothrappali decides to set the meeting in his restaurant, but it goes off the deep end and Sheldon ends up getting the girl.
Episode 09: The Cooper-Hofstadter Polarization (Cooper-Hofstadter Polarization)
When Sheldon and Leonard are invited to present their work at a physical conference, Sheldon refuses. But when Penny intervenes to mediate, this only makes the rift between the two deepest friends.
Episode 10: The Decay Loobenfeld (The Decline of Loobenfeld)
The boys are invited by Penny to see his portrayal of Rent, but they know how horribly songs, then Leonard mind to get out. But Sheldon is so disturbed by the lies, that weaves intricate new lie, which he thinks is best. Then tell Penny that Sheldon has a cousin drug addict, and that they must make a speech in Long Beach. They also invite their fellow physicist, who studied theater in college, to play the cousin. Penny falls for it completely.
Episode 11: The Pancake Batter Anomaly (The anomaly of the batter for pancakes)
When Sheldon gets the flu, all the guys knowing how to escape injury when he becomes ill. Sheldon then went to the restaurant asking for soup Penny. He ends up leaving the work yourself and take care of him.
Episode 12: The Jerusalem Duality (The City Replica)
A fourteen year old is introduced to the miraculous genie physics lab where Sheldon and Leonard work. Sheldon feels threatened by the boy, because he's taken the title of youngest genius. Sheldon suffers a crisis of self-esteem, and his friends try to comfort him. In an attempt to give him a purpose, the boys find a solution that derails the research of the newcomer.
Episode 13: The Bat Jar Conjecture (Conjecture of The Bat-biscuit)
The boys decide to participate in College Physics Olympiad, but Sheldon is so obnoxious that the other threw him off the team. He decides to form his own team personnel with the janitor and the cafeteria lady, and takes the field against his comrades. Leslie Winkle joins the team to Leonard, who ends up beating one of Sheldon.
Episode 14: The Nerdvana Annihilation (Time Machine)
When the guys buy an old time machine, accessory scene in a movie, Penny accuses them of being kids and tells them to grow. This prompts Leonard to get rid of all his nerd toys, understands that as the girls like Penny do not end up with guys who never have a time machine. But when Leonard sees Penny out with beautiful trees, decides to keep his things.
Episode 15: The Pork Chop indeterminacy (Factor Twin Sister)
Sheldon's twin sister arrives in town and it's really to lose your head. Leonard, Wolowitz, and Koothrappali go crazy for her and are racing to get his attention. When Leonard devises a plan to eliminate rivals, it backfires on him because Sheldon declares he'll decide who must leave his sister.
Episode 16: The Peanut Reaction (Reaction to Peanuts)
The gang discovers that her birthday is coming of Leonard. Penny wants to throw a party for him, but discovers that his family has never celebrated her birthday. Penny decides to surprise him and accompany Sheldon to buy a gift for a friend. Wolowitz Leonard taking part in the emergency room, pretending to have eaten a snack containing peanuts, which is highly allergic. Leonard, however, was not fooled, and he then, to keep him, eat really finger. When the two finally able to return to the apartment, the party is over. Penny, feeling terrible about what happened, a big kiss from Leonard.
Episode 17: The Tangerine Factor (Factor Mandarin)
Penny finally breaks up with her boyfriend, giving Leonard the courage to ask her on a real date, she accepts. However, before you actually go, both calling for a "wise" advice separately to a reluctant Sheldon.
