The funny people of the Upright Citizens Brigade present off-the-cuff improv at its best. Comedians, many of whom are currently working in film and television (read: employed!) take the stage, working off suggestions from the audience. (Possible special guests include folks from Saturday Night Live, 30 Rock and The Daily Show.) Asssscat is one of the longest-running improv shows in the history of the world, so if you're disappointed, you probably just don't like to laugh. Note: only the 9:30pm show is free (the 7:30pm show is $10). Tickets are distributed outside the theater at 8:15pm; since the show is so popular, we recommend getting there much earlier.
The 7:30 performance is $10, and the 9:30 performance is free. Visit ucbtheatre.com for more info.