Guest Star: Lewis Black
You are viewing a list of Lewis Black's 1 appearance on The Big Bang Theory.
Season 3, Episode 2 - The Jiminy Conjecture
Aired September 28, 2009
Leonard and Penny's relationship hits a snag when their first night together is not as special as they expected. Meanwhile, Sheldon and Howard go to great lengths to determine the species of a cricket for a wager they made.
Appeared as Professor Crawley