For me, it's Richard Nixon from Frost/Nixon.
Master Skeletor.
Dracula (1979)
Wall Street
Diary of a Mad Housewife
Dave. One of my favourite films and he's a really good baddie in it.
Skeletor
He was a lot of fun to watch in Polanski's The Ninth Gate.
Zorro in "The Mark of Zorro" (1974).