Season 5 Episode 20 episode 20

The Big Bang Theory Season 5 Episode 20 "The Transporter Malfunction" Promo

The Big Bang Theory Season 5 Episode 20 "The Transporter Malfunction" Promo

"Star Trek" legend Leonard Nimoy guest-stars on the upcoming episode of The Big Bang Theory, season 5 episode 20, "The Transporter Malfunction".