The Big Bang Theory Season 5 Episode 20
Season 5
Episode: 20
Air Date: 2012-03-29
Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the “Future Mrs. Koothrappali” after…
Episode Title: The Transporter Malfunction