And let us not forget his turn as superspy Scylla, in "Marathon Man" with Dustin Hoffman and Laurence Olivier. There's a secret in the plot about his identity, which I won't give away in case you haven't seen the movie.

(As I recall, the novel, not the movie, had yet another howling surprise part way through, too.)

I seem to remember that he was in line to star in a spy TV series called "Assignment: Vienna" (originally "Assignment: Munich") and dropped out, to be replaced with Robert Conrad. If he hadn't, and the series had run for a while, he might not have been free to do "Jaws." And of course he was the hero in "Blue Thunder," opposite Malcolm McDowell.
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-- Paul W. (The Benzadmiral)
('03 Buick Park Avenue, charcoal/cream)
Formerly:
'97 C230, smoke silver/parchment; '86 420SEL, anthracite/light grey; '84 280CE (W123), dark blue/palomino