Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Howard tries to pick his astronaut nickname. NASA astronaut MIKE MASSIMINO guest stars.
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When a corner office at the University opens up, Sheldon must compete for it with his office nemesis, Barry Kripke. Meanwhile, Penny receives an unusual gift from Amy.
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A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Meanwhile, Howard rethinks his decision to go into space after astronaut training.
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Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party... and gets a lesson from Penny and Amy.
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When Bernadette won't go in labor, all her friends try different tactics to get things started. Howard confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.
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Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Bernadette and Howard have a hard time deciding who should stay home with the kids and who should go back to work.
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Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical firm. Leonard, Raj, and Howard do everything they can to meet him, and Sheldon thinks he is the victim of an April Fools prank.
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When Leonard learns Sheldon is the president of the tenants association, he decides to run against him. Bernadette encourages Howard and Raj to find the owner of a drone after they find it in the backyard.
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Reclusive scientist, Doctor Wolcott, invites Sheldon to his cabin in the middle of nowhere, and Leonard, Raj and Howard go along. Penny and Bernadette improvise after Amy doesn't like the tame bachelorette party they planned for her.
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