Shenanigans are in store during Teresa Waldorf's production of Wonder of the World, a screwball comedy by David Lindsay-Abaire. Cass Harris discovers her husband's disturbing secret, heads to Niagara Falls and encounters nutcases along the way. Showing at Downtown Dance Collective, 121 W. Main St., at 7:30 PM. $15/$12 in advance/$10 for students. Tickets at ddcmontana.com.