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Leonard gets an opportunity to work on a Stephen Hawking project but is apprehensive because it will keep him away from Penny for three months. More...
The girls get excited about a trip to Vegas, and the guys use the opportunity to have a Dungeons & Dragons night. More...
Sheldon gets excited when he learns that his favorite TV science personality, Professor Proton, is able to be booked for private parties. More...
Sheldon is furious when he finds out that the SyFy series Alphas was cancelled after its cliffhanger second series finale, preventing him from getting much-needed closure. More...
The guys learn that a professor has died at the university, meaning that a position on the tenure track has opened up. Sheldon, Leonard, Koothrappali, and Kripke are all viable candidates for the position More...
Bernadette & Wolowitz host a dinner party, but Sheldon brings take-out Thai food out of habit since the party fell on his Thai food night. More...
Sheldon, Wolowitz, and Leonard are forced to volunteer on a committee for the university, but Sheldon hates nearly all of them and doesn’t want to put forth any extra effort. They wind up joining a committee that encourages women to get involved in the sciences and go to speak at Wolowitz's old middle school. Th... More...
This episode picks up where episode #616 left off, with Koothrappali on his date with Lucy from the comic book store. Much to his dismay, Lucy runs away during the middle of the date, shattering his confidence. Leonard, Wolowitz, and Bernadette try to pull him out of his slump, but it’s no use. Luckily, Wolowitz... More...
It's Valentine's Day and Leonard wants to give Penny a night full of fun and romance, despite her not being the biggest fan of the holiday. He takes her to a fancy restaurant with Bernadette and Wolowitz, but things take a turn for the worse when Penny sees her ex-boyfriend propose to the girl he cheated on her with. T... More...
Leonard gets upset with Sheldon when he spoils the ending of one of the Harry Potter books for him, so he storms over to Penny’s place to cool off. While there, he broaches the subject of moving in with Penny, which she isn’t ready for and can’t articulate properly. Unable to properly convey her fe... More...