| Danielle Hirsch | (10 April 1993 - present) 2 children |
| Deborah Kahane | (22 July 1979 - 9 May 1986) (divorced) 2 children |
His mother appeared with him in Big Wednesday (1978).
Lookalike son of actor Bill Williams, who starred as Kit Carson in "The Adventures of Kit Carson" (1951), and mother, actress Barbara Hale.
Listed as one of twelve "Promising New Actors of 1977" in John Willis' Screen World, Vol. 29. [1977]
Has four children, two sons: Clayton Alexander & Emerson Hunter and a stepson Andrew and a daughter Dakota.
Attended Orange Coast College in Costa Mesa, California.
Brother of Jody Katt (b. 1947) and Juanita Katt (b. 1953).
Auditioned for the part of Luke Skywalker in the original Star Wars (1977) opposite Kurt Russell, who auditioned for the role of Han Solo.
During California's historic Gubernatorial Recall, he got a good laugh from a fan at North Hollywood's Beverly Garland Inn...after being asked about the research and preparation he had done for his short-lived series Top of the Hill (1989) (TV). The fan told him, "...So why don't YOU run for Governor?"
Attended and was a mentor at the 2nd annual HatcH audiovisual festival in Bozeman, MT in October 2005. HatcH is a film and arts festival whose mission is to provide mentorship, education, inspiration, and recognition to the next generation of creative innovators.
In 2008 started his own line of comic books called "Catastrophic Comics" with the launch of the critically acclaimed book "Sparks" co-created by William Katt with Christopher Folino.
Hated his "Great American Hero" (1981) outfit so much for its look and discomfort, TV Guide had to use an illustration of him rather than a photo for the Fall front cover.
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