Season 5, Episode 20 - The Transporter Malfunction
Aired March 29, 2012
Penny buys Leonard and Sheldon rare "Star Trek" collectibles as a thank you for the all times they've helped her out. The guys initially decide to keep their toys in the box, but Sheldon's "Inner Spock" convinces him to open his up - with disastrous results. Meanwhile, when Raj asks his parents to set him up on a blind date, he thinks he's found the "future Mrs. Koothrappali".