Tom Green was appearing here on Jan 22, 2012. He was hilarious.
The Improv is an excellent comedy club, in past shows I've seen Jim Krenn, Margaret Cho, Billy Elmer, and so many more I forget. Much like Live from the Improv on TV, the brick back drop makes it feel like the NYC Improv.
Hint: eat elsewhere, the food isn't so great, have an appetizer until you get to another restaurant, most comedians head over to the Rock Bottom after to imbibe. Dave Attell is a regular at both places. Two drink minimum, drink them slow and go elsewhere after the show.