The gang of geeks on the hit CBS comedy The Big Bang Theory are no doubt going to be very excited when they meet none other than Summer Glau. EW.com's Michael Ausiello reports that the Terminator: The Sarah Connor Chronicles star will play herself on an upcoming episode.

Ausiello reveals that Glau will appear on the March 9th episode, in which Leonard, Sheldon, Howard and Raj take a train to San Francisco, and realize that Glau is on board.

Characteristically lacking confidence when it comes to women, the guys than get into a heated debate over which one of them will actually approach her.