Tonight, the Eat, Drink and Be Larry comedy troupe performs a madcap parody of Batman at Gorilla Tango Comedy Theatre, located Downtown between Fifth and Sixth Streets. Batman Starts or Something will be partly scripted and partly based on suggestions from the audience. Everyone's going to be there—Joker, Riddler, Catwoman, Penguin, Poison Ivy, Superman and Aguaman! Bring the whole family, the in-laws, the outlaws—everyone. Kids can come dressed as their alter-ego superhero. The show runs Fridays and Saturdays at 10:30 p.m. ($10) and Sundays at 6 p.m. ($8) through Sept. 11. 245-8600.