The Monopolar Expedition

The guys' prestigious offer to work over the summer at the North Pole -- and Penny's resultant behavior -- leaves Leonard unsure if he should go.

Season 2 | Episode 23

TV-14-DL
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Cast

Jim Parsons

as Sheldon Cooper

Johnny Galecki

as Leonard Hofstadter

Kaley Cuoco

as Penny

Simon Helberg

as Howard Wolowitz

Kunal Nayyar

as Raj Koothrappali