The Big Bang Theory
Season 2
23 episodes
-
S02E01 The Bad Fish Paradigm
After her first date with Leonard goes awry, Penny finds an unwilling confidant in Leonard's anti-social roommate, Sheldon.
-
S02E02 The Codpiece Topology
When Leonard sees Penny with a handsome new guy, he enters into a rebound relationship with Sheldon's nemesis, Leslie Winkle.
-
S02E03 The Barbarian Sublimation
Sheldon creates a monster when he introduces Penny to the world of online gaming.
-
S02E04 The Griffin Equivalency
Raj, newly famous because of an article in a magazine, gets a big head and makes a disastrous play for Leonard's crush, Penny.
-
S02E05 The Euclid Alternative
Leonard and his friends stage an intervention to make Sheldon confront his longstanding refusal to drive.
-
S02E06 The Cooper-Nowitzki Theorem
Young grad student's attraction to Sheldon confuses everyone, including Sheldon himself.
-
S02E07 The Panty Piñata Polarization
Penny vows to get revenge on Sheldon when he bans her from the apartment for a series of petty infractions.
-
S02E08 The Lizard-Spock Expansion
Wolowitz thinks he's found the love of his life, until she meets Leonard.
-
S02E09 The White Asparagus Triangulation
Sheldon can barely contain his joy when Leonard starts dating a woman who meets Sheldon's exacting standards.
-
S02E10 The Vartabedian Conundrum
Sheldon uses Dr. Stephanie to check all his hypochondriac symptoms. When Leonard's relationship with a new woman starts moving too fast for him, he goes to Penny for advice.
-
S02E11 The Bath Item Gift Hypothesis
Christmas is a source of stress for Leonard - whose handsome colleague starts dating Penny - and his friends, who are being tormented by Sheldon's obsession with gift-giving etiquette.
-
S02E12 The Killer Robot Instability
When Penny's comment about Wolowitz's love life sends him into a depressed stupor, his friends lose their most important team-mate in an upcoming fighting robot competition.
-
S02E13 The Friendship Algorithm
Socially awkward Sheldon develops a scientific procedure for making friends.
-
S02E14 The Financial Permeability
Sheldon's "simple" solution to Penny's financial problem leads to a confrontation between Leonard and Penny's hulking ex-boyfriend, Kurt.
-
S02E15 The Maternal Capacitance
Disastrous visit from Mrs. Hofstadter brings Leonard and Penny closer together.
-
S02E16 The Cushion Saturation
Paintball game leads to a fight between Penny and Sheldon, and romance for Wolowitz and Leslie.
-
S02E17 The Terminator Decoupling
Train trip to San Francisco takes a major detour when Sheldon discovers he forgot his flash drive and Leonard, Wolowitz and Raj discover that sci-fi actor Summer Glau is onboard.
-
S02E18 The Work Song Nanocluster
Penny's home hair products business becomes a complete nightmare when a caffeine-addled Sheldon takes over.
-
S02E19 The Dead Hooker Juxtaposition
Penny develops a rivalry with a sexy female neighbor who threatens to become "The New Penny" in the building.
-
S02E20 The Hofstadter Isotope
While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of "Ladies' Night" at a local bar.
-
S02E21 The Vegas Renormalization
Leonard and Koothrappali take a heartbroken Wolowitz to Las Vegas, leaving Sheldon locked out of his apartment and forced to bunk with Penny.
-
S02E22 The Classified Materials Turbulence
Things begin to look up for Leonard when Penny makes a surprising revelation on her second date with Stuart. Meanwhile, Wolowitz enlists his friends' help when he discovers a critical design flaw in his project for NASA.
-
S02E23 The Monopolar Expedition
Penny is conflicted when Leonard and his friends decide to spend the summer working - at the North Pole.
More from the 2000s.