We're gonna need a bigger boat...Roy Schneider dead

In addition to those already mentioned, don't forget:
Sorcerer
The Marathon Man
2010
King of Texas (made for TV, this was King Lear updated to a 1900's Texas ranch - it was a little weird, but he and Patrick Stewart were terrific in it)

Do forget:
SeaQuest

Scheider was a great actor with a large number of unforgettable performances. He will be missed greatly and his legacy will live on for a very long time.