If you have $5

Buy a snack on Saturday night and take in a movie at American City Diner at 5532 Connecticut Ave. N.W. The movie Saturday is Casablanca, the 1942 classic about Americans in Northern Africa during World War II. Humphrey Bogart plays Rick, the surly bar owner with the heart of gold for Ingrid Bergman’s Ilsa. Keep on the lookout for the worst form of cheating in film history (hint: it involves a concentration camp).

If you have $10

Borrow $5 and dance your ass off on Tuesday at 9:30 Club. Ratatat will be playing a late show, with doors at 10 p.m., and it’s well-worth staying up for. Mike Stroud and Evan Mast make some of the most infectious beats in the business, rocking hook after hook like it’s their job, which I guess it is. Anyway, they’re rock kids who dig Jay-Z, which is a pretty good place to start.

If you have $20

How often to you get to hear one of the best emcees of all time live? Well, you’ve got a chance on Friday. Go to Love at 1350 Okie St., N.E. at 8 p.m. to hear street poet Nas. He still hasn’t topped Illmatic, but this is okay since, you know, maybe three or four other people in the history of hip-hop have topped Illmatic. Anyway, his latest, Hip Hop Is Dead, is his best since his debut, so check him out.