Season 2
Smart is the new sexy.
Synopsis
The Big Bang Theory Season 2 — watch online on iFILM, 23 CBS episodes from 2008. After the world's most awkward first date, Leonard and Penny agree that being neighbours is enough. It isn't.
Sheldon drafts a rule set for Penny's apartment visits and eventually bans her from the premises; she retaliates without hesitation. Howard takes the controls of a NASA Mars Rover and promptly drives it into a ditch. Penny, introduced to online gaming by Sheldon of all people, vanishes into a fantasy RPG for weeks at a time. Raj gets a magazine write-up and develops an ego to match. By the finale, all four are headed to the Arctic for a research summer, and the looming separation finally forces Penny to be honest with herself about what Leonard means to her.
Season two opens the world up — running romantic subplots, recurring new faces, and a slow-building case that the group dynamic matters more than any one couple. Stream The Big Bang Theory Season 2 all episodes on iFILM.
23 episodes
S2·E1The Bad Fish Paradigm
Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.
S2·E2The Codpiece Topology
A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
S2·E3The Barbarian Sublimation
Sheldon creates a monster when he introduces Penny to online gaming.
S2·E4The Griffin Equivalency
Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
S2·E5The Euclid Alternative
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
S2·E6The Cooper-Nowitzki Theorem
Sheldon and the gang are confused when a young grad student is attracted to him.
S2·E7The Panty Piñata Polarization
When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
S2·E8The Lizard-Spock Expansion
Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
S2·E9The White Asparagus Triangulation
Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
S2·E10The Vartabedian Conundrum
Leonard asks Penny for advice when his new relationship starts moving too fast.
S2·E11The Bath Item Gift Hypothesis
Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
S2·E12The Killer Robot Instability
Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for.
S2·E13The Friendship Algorithm
Sheldon creates a scientific procedure for making friends.
S2·E14The Financial Permeability
Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
S2·E15The Maternal Capacitance
Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
S2·E16The Cushion Saturation
A paintball game leads to a fight between Sheldon and Penny, and romance for Leslie and Wolowitz.
S2·E17The Terminator Decoupling
Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
S2·E18The Work Song Nanocluster
Penny's home business turns into a complete nightmare when Sheldon takes over.
S2·E19The Dead Hooker Juxtaposition
Penny squares off with a new beautiful female neighbor who may become the building's "new Penny."
S2·E20The Hofstadter Isotope
A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
S2·E21The Vegas Renormalization
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
S2·E22The Classified Materials Turbulence
Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
S2·E23The Monopolar Expedition
The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
12 seasons
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