Casanova at Twilight. CU Presents, ATLAS Black Box Theater, 1125 18th St., Boulder, 303-492-8008. Through Oct. 2.
God’s Ear. The Catamounts, The Dairy Center for the Arts, 2590 Walnut St., Boulder, 303-447-9772. Through Oct. 15.
The Night of the Iguana. Miner’s Alley Playhouse, 1224 Washington Ave., Golden, 303-935-3044. Through Oct. 23.
Ragtime. Arvada Center for the Arts and Humanities, 6901 Wadsworth Blvd., Arvada, 720-898-7200. Through Oct. 2.
Six Characters in Search of an Author. 73rd Ave. Theatre Company, 7287 Lowell Blvd., Westminster, 720-276-6936.
Waiting for Lefty. CU Theatre & Dance, University Theatre Building, theatredance. colorado.edu. Through Oct. 9.