A train trip to San Francisco takes a major detour when Leonard, Sheldon, Wolowitz and Raj discover that beautiful sci-fi actress Summer Glau ("Terminator: The Sarah Connor Chronicles") is onboard.
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US Ratings: 9.47m viewers. Nielsen Rating: 5.8/9. Nielsen 18-49 Rating: 3.6/10.
Guest Stars
Summer Glau as Herself, Dr. George Smoot as Himself
Writers
Bill Prady (Story), Dave Goetsch (Story), Tim Doyle (Teleplay), Stephen Engel (Teleplay)
Director
Mark Cendrowski
The episode features a cameo by Nobel Laureate Dr. George Smoot.
Penny: Hey Leonard, what's up with Dr Wackadoodle?
Penny: Whassup Moonpie?
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