William B. Davis
He plays The Cigarette Smoking Man in The X-files.
*At the beginning he was just hired to smoke a cigarette in The X-files Pilot, nothing more. And when the writers decided to give him a bigger part, it caused quite many questions about his acting capability. But it turned out he was a good actor, and has become after Mulder and Scully, the X-files` best known character.
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