DCten
Weekly short list of things to do in DC.
Alternative to going through long lists of events.

Brightest Young Things
Calendar of events with focus on live music, comedy, and other performances.
Good resource for learning about the gay scene.

CultureCapital
Comprehensive source for cultural events.

Free in DC
Useful resource to find free and low-cost things to do in DC.
Focuses on arts and cultural events.

JBC Events: Useful resource to find unique events to attend in DC.