how about the late Richard ( not Dick) Widmark in the kiss if death.anyone who would laugh while pushing an old lady in a wheelchair to her death down a flight of stairs has to be on some top ten list.
Hi Bill, have to agree with you anout Widmark in "Kiss of Death."
Also, two more I can think of are:
Stephan McNally as: Dutch Henry Brown (James Stewarts Outlaw Brother in: Winchester '73.) and also: Dan Duryea as: Waco Johnny Dean in that same movie.