Here are some of his other notable projects:
Television:
* "Emergency!" (1972-1979) as John Gage
* "The Misadventures of Sheriff Lobo" (1979-1981) as Sheriff Lobo
* "The Fall Guy" (1981-1986) as Colt Seavers (recurring role)
* "Highway to Heaven" (1984-1989) as a guest star
* "Murder, She Wrote" (1984-1996) as a guest star
* "Walker, Texas Ranger" (1993-2001) as a guest star
* "The Young and the Restless" (1973-present) as a guest star
* "Touched by an Angel" (1994-2003) as a guest star
* "Diagnosis: Murder" (1993-2002) as a guest star
* "The X-Files" (1993-2002) as a guest star
* "ER" (1994-2009) as a guest star
* "JAG" (1995-2005) as a guest star
* "CSI: Crime Scene Investigation" (2000-2015) as a guest star
* "The Closer" (2005-2012) as a guest star
* "NCIS: Los Angeles" (2009-present) as a guest star
Films:
* "The Last American Hero" (1973)
* "The Towering Inferno" (1974)
* "The Black Hole" (1979)
* "The Day the Earth Stood Still" (1984)
* "The Final Terror" (1983)
* "The Fourth Wise Man" (1985)
* "The Last Starfighter" (1984)
He has also done voice acting in several animated series and made a few appearances on stage.
It's important to note that this list is not exhaustive and may not include all of his roles. However, it represents some of his most prominent and well-known work.