Claim: David Rasche is an American theatre actor who played Mark in the Broadway play "The Shadow Box".
Evidence: David Rasche (/ˈræʃi/ RASH-ee; born August 7, 1944) is an American theater, film and television actor who is best known for his portrayal of the title character in the 1980s satirical police sitcom Sledge Hammer! Mark Morosco Theatre, Broadway The Shadow Box The play made its Broadway debut on March 31, 1977.