The Monopolar Expedition
Show: The Big Bang Theory --> Season: 2 - Season 2
AirDate: 5/11/2009
Runtime: 21
Voting: 7.477 (43)

Overview: The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
Alice Amter
Mrs. Koothrappali
Brian George
V.M. Koothrappali
Carol Ann Susi
Debbie Wolowitz (voice)