That's THC as in tetrahydrocannabinol--but this stand-up showcase isn't just for stoners. Originally a monthly gig at the Hollywood Improv with a rotating lineup, it's now touring four cities with three comics performing wide-ranging observational humor complemented by sketch comedy. All three are relatively unknown but boast long resumes of stage and screen work. Doug Benson, who did season four of Last Comic Standing, jokes about masturbating to marijuana centerfolds in High Times (an early sponsor), and Best Week Ever talking head Al Madrigal plunders his half-Mexican, half-Sicilian heritage. Jay Phillips, the strongest of the three, is tamer than Dave Chappelle but similarly focused on class and race. His confidence and crisp delivery carry a very funny bit on stuttering, and his Michael Jackson impersonation, though routine, persuasively argues that the icon's dancing suggests he "just lost his keys." The live hip-hop band Abstract Giants also performs. a Fri 1/12, 9 PM, Metro, 3730 N. Clark, 773-549-0203 or 312-559-1212, $13, 18+.