The Corcoran Group: A massive (and exceptionally clean) food court! Definitely check out the crepe station upstairs after getting your fill of Korean Galbi and Kimbap.
Serious Eats: The Ding-Dong Lounge is dive bar perfection. Not too many Columbia kids, just exposed bricks, cheap drinks, a Ms. Pac-Man machine, a pool table, and a DJ rocking punk-y, rock-y, indie-y tunes.