Big Bang Theory The Hot Troll Deviation Season 4, Episode 5

We thought the Steve Wozniak cameo earlier this season couldn't be topped, but if there's one thing nerds love more than computers, it's science fiction. "Battlestar Galactica" star Tricia Helfer and "Star Trek" star George Takei stop by tonight to help Wolowitz win his girlfriend back … because nothing reels in the ladies like advice from fictional sci-fi characters.