Along with Matt Frewer and Amanda Pays, he is one of only three actors to appear in both Max Headroom (1986) (TV) and "Max Headroom" (1987).
Drama-Logue Award 1995 for "The Homecoming", Matrix Theatre.
Father of Mark Sheppard.
Has appeared as different characters in four incarnations of "Star Trek". He was the warden of the Klingon penal colony in Star Trek VI: The Undiscovered Country (1991), "Dr. Ira Graves" in the "Star Trek: The Next Generation" (1987) episode, "Star Trek: The Next Generation: The Schizoid Man (#2.6)" (1989), "Qatai" in the "Star Trek: Voyager" (1995) episode, "Star Trek: Voyager: Bliss (#5.14)" (1999), and as the Vulcan Science Minister in Star Trek (2009).
Like his son Mark Sheppard, he has made guest appearances on both "Star Trek: Voyager" (1995) and "Doctor Who" (2005).
Was the runner-up for the role of Ambassador G'Kar on "Babylon 5" (1994).