1 / 12

"The Big Bang Theory" - "The Hofstadter Insufficiency"

Sheldon (Jim Parsons) and Penny (Kaley Cuoco) share intimate secrets while Leonard is away at sea, on a special one-hour seventh season premiere of "The Big Bang Theory."

'The Big Bang Theory' Season 7 Episode Photos

Premieres Thursday, September 26 at 8 PM on CBS.