Celebrate St. Patrick's Day the way Paddy O'Irish (president of Ireland—look it up) does it in the old country: getting sloshed on green beer, watching live improv, and making fun of Leprechaun—the best movie ever about goblin gold, pogo-stick murder, and Jennifer Aniston's original nose. Local improv troupe Blood Squad delivers tight, clever, genre-skewering slasher movies on the fly. They'll perform 30 minutes of their inimitable craft (Irish-themed, natch), then turn the drunken audience loose on 92 minutes of murderous leprechaun. (Central Cinema, 1411 21st Ave, 686-6684. 10 pm, $7, 21+.)