Six by Sondheim 2013
as Tony (archive footage)
New York, New York 1977
as Donald (uncredited)
S Wonderful, 'S Marvelous, 'S Gershwin 1972
as Self
Synanon 1965
as Bob Adamic
Gentlemen Prefer Blondes 1953
as Chorus Boy (uncredited)
Credits from TMDB.