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Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.
Penny learns that Leonard does not celebrate birthdays, so she plans a surprise party; Sheldon unexpectedly gets to live out one of his biggest fantasies in an electronics store.
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The Big Bang Theory
S1, EP12 "The Jerusalem Duality"Sheldon and Leonard look for a way to derail a 15-year-old physics prodigy's research.
The Big Bang Theory
S1, EP13 "The Bat Jar Conjecture"When Sheldon tries to prove his mental superiority as they train for the Physics Bowl, the guys kick him off the team and bring his nemesis (Sara Gilbert) aboard.
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
S1, EP15 "The Pork Chop Indeterminacy"Leonard devises a plan to eliminate his rivals when he, Wolowitz and Koothrappali all fall for Sheldon's twin sister, but his plan backfires when Sheldon decides to choose who his sister dates.
The Big Bang Theory
S12, EP24 "The Stockholm Syndrome"Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.
The Big Bang Theory
S12, EP22 "The Maternal Conclusion"Leonard is pleasantly surprised when Beverly comes to visit, and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.
The Big Bang Theory
S12, EP19 "The Inspiration Deprivation"The weight of winning a Nobel Prize weighs heavy on Amy's shoulders; Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago.
