Keir Dullea
Keir Dullea (/ˈkɪər duːˈleɪ/; born May 30, 1936) is an American actor best known for the character of astronaut David Bowman, whom he portrayed in the 1968 film 2001: A Space Odyssey, and in 1984's 2010: The Year We Make Contact. Other film roles include Bunny Lake Is Missing (1965) and Black Christmas (1974).