TOD: The Candidate, Barefoot in the Park, Jeremiah Johnson, The Way We Were, Downhill Racer, Butch Cassidy and the Sundance Kid, Inside Daisy Clover, The Natural.
I like him in "The Great Gatsby", and love "Out of Africa" but don't think he's particularly cast well in it. His "presence" is perfect, but his Americanized portrayal of a British gentleman is not, and it's that one thing that keeps the movie from being absolutely perfect.