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Sheldon is upset when he realizes Leonard is the center of their group of friends.
Sheldon is upset when he realizes Leonard is the center of their group of friends.
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The Big Bang Theory
S2, EP12 "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 teammate in an upcoming fighting-robot competition.
The Big Bang Theory
S2, EP13 "The Friendship Algorithm"Sheldon develops a scientific procedure for making friends; Kripke controls a new supercomputer.
The Big Bang Theory
S5, EP9 "The Ornithophobia Diffusion"Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.
The Big Bang Theory
S1, EP14 "The Nerdvana Annihilation"Leonard and the guys buy a time machine prop from a classic movie; Penny tells the guys their obsession with comics and toys is pathetic.
The Big Bang Theory
S4, EP18 "The Prestidigitation Approximation"Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.
The Big Bang Theory
S4, EP17 "The Toast Derivation"Sheldon is upset when he realizes Leonard is the center of their group of friends.
The Big Bang Theory
S4, EP16 "The Cohabitation Formulation"Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.
The Big Bang Theory
S4, EP15 "The Benefactor Factor"A wealthy donor makes Leonard question what he is willing to do for science.
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