Sean M. Whalen is an American film, television, and stage actor. Whalen may be best known for the first "Got Milk?" commercial, in which his character tries in vain, after taking a large bite of a peanut butter sandwich, to answer a radio host's question about the famous Burr-Hamilton duel. Whalen also starred in a DiGiorno pizza commercial, in which his character and a friend enjoy a Chicago-style pizza in Tucson, Arizona, as well as the short-lived 2001 television program, Special Unit 2.