The Big Bang Theory
Show: Family Guy --> Season: 9 - Season 9
AirDate: 5/8/2011
Runtime: 22
Voting: 7.4 (12)

Overview: Stewie and Brian go back in time to stop Bertram from killing Leonardo da Vinci in order to erase Stewie from the universe.
Wallace Shawn
Bertram (voice)
Joe Flaherty
Vatican Messenger (voice)