Raj's parents set him up on a blind date, and when he discovers he can talk to her, she shows interest in Sheldon. ..More

With the rest of the gang off on a desert camping trip to view the Leonid meteor shower, Sheldon must play hero after Penny slips in the tub and dislocates her shoulder. ..More

The guys get Zack and Penny to join their Justice League costume for a New Year's Eve bash at the comic book store. ..More

Without financial backing from his father, Raj finds himself in a cash crunch and turns to Sheldon to help him get his head above water. Meanwhile, Penny considers crashing the guys' annual Comic-Con getaway. ..More

Leonard and Penny offer Sheldon's old room to Raj after he moves out of his apartment. ..More

Penny and Bernadette go to San Diego for a pharmaceutical sales convention, leaving Howard in charge of the kids. Sheldon finds a book on experimenting on kids, and the guys plus Amy make a day of it. ..More

Pemberton and Campbell charm America on a publicity tour, so Sheldon and Amy bring Nobel laureates Kip Thorne, George Smoot, and Frances Arnold to their side. Halley's fear of the dark leads to conflict for Howard, Bernadette and Stuart. ..More

Amy has a meltdown due to the pressure associated with winning a Nobel Prize. Raj and Howard try to relive the good old days after Howard buys a scooter that looks like the one he had years ago. ..More

Raj is worried people won't take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Leonard wants to be the principal investigator on a plasma physics study. ..More