The Second City
Founded in 1959 by Alan Arkin and several cohorts, this comedic theater company has been the training ground for the likes of John Belushi, Mike Myers, Gilda Radner, Bill Murray, Steve Carell, Stephen Colbert, Amy Sedaris, and many others. Comedians perform sketches and improvisational routines daily on two stages (e.t.c. and Mainstage), and cover topics including (but not limited to) sex, marriage, race, and current events. Warning: if you’re easily offended, you may want to avoid the late-night shows; they get more risqué as the evening progresses.