Olsen and Johnson were zany comedians of vaudeville. radio, the Broadway stage, motion pictures, and television. Their shows were well known for their crazy blackout gags and orchestrated mayhem ("anything can happen, and it probably will"). Their most famous concept, Hellzapoppin', has become show-business shorthand for free-wheeling, anything-goes comedy; it enjoyed a lengthy run on Broadway and even spawned a movie version.