As horror fans, we loved him in Willard, The Devil's Rain, Deadly Blessing, and most especially, Escape From New York. We will never again hear the American Bandstand theme song without picturing him as Cabbie. For us, that song is his now.
If there's one movie of his that I loved the best though, it would have to be The Poseidon Adventure. One of the first movies I ever saw as a kid, and his portrayal as the movie's tough guy (Rogo) made me want to learn to swim so I could save people just like he did. He was that good.
Get some rest, old man. You most definitely deserve it.