Descend the murky stairs and "Butt on in" as the sign says. Made famous by John Belushi's Saturday Night Live "Cheeseburger, cheeseburger, cheeseburger" skit, this joint never fails to please in all of its sleazy glory. For a truly authentic experience, enter late when all the tourists have left. Check out the old Mike Royko columns and photographs on the walls. You can order breakfast until 11a and after that you can order a hot dog, a ham and cheese or a cheeseburger, but you cannot order fries - only chips. Try the "Doublacheez" for a wallop.