Dave Chappelle has returned. The comedian made two stops Wedensday — Hollywood Improv at 10 p.m. and the Comedy Store at midnight — treating crowd of 200 and 20, respectively, to some unrehearsed standup. Chappelle showed up unannounced to both venues, telling audiences, he’d just arrived from LAX and was in the mood to perform, according to a reps for both clubs. A Comedy Central rep said net execs would be sitting down with Chappelle to talk business “really, really soon.” The AWOL star was spotted last week in his hometown of Yellow Springs, Ohio, back from his sudden “mental health” retreat to South Africa. The trip caused the network to halt production on, and indefintely postpone, the third season of his hit series, originally slated to premiere May 31.