Where do you start ?
Hundreds of films, tv films and tv series.
F/X2, Cocoon, First Blood.
Just looking on Wikipedia, his first tv role looked like it was in Kojak in 1977.
I loved that show as a 10yr old.
Dallas, Knots Landing and Dynasty, Lou Grant, Mash, Cagney & Lacy - he was everywhere.
He always struck me that his good guys could've been bad guys too. He had that look I thought.

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"You can't believe everything you read on the internet" : William Shakespeare