He has also guest starred in numerous television series, including Cheers, Knight Rider, Sledge Hammer !, MacGyver, In the Heat of the Night, and NYPD Blue, but perhaps most notably ( and certainly most repeatedly ) as Klingon Chancellor Gowron on Star Trek: The Next Generation and Star Trek: Deep Space Nine.

He has also guest starred in numerous television shows including Supernatural, Smallville, Sanctuary, Tru Calling, Battlestar Galactica, Outer Limits, Human Target, and The Twilight Zone.

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