Theo Ubique, with its young, gutsy casts and atmospherically gunky venue, almost makes showtunes cool. Almost. For the Eve, this small company will help you get your geek on in the intimate dark of the No Exit Cafe. Start with selections from the current show, "Man of La Mancha," break for snacks, then come right back for a set of musical-theater favorites at 11 p.m. Your ticket comes with an open bar, party favors and a glass of the bubbly at midnight.