[2] He was an actor four years before he began playing college football and he was an all-conference offensive guard at UCLA.

Named to the first All-Star teams for both the Pacific-8 and the West Coast Athletic Conference, Clark also received All Star All American Honorable Mention Laurels, played in the Hula Bowl and was selected by the Pittsburgh Steelers in the ninth round of the 1975 NFL draft.

[a][3] Clark had a prominent co-starring role as Sid Gomez in the 1990s science fiction show William Shatner's Tek War.

[4] Clark played the role of Mufasa in the Ontario Broadway production of The Lion King for two years.

[5] Clark's best-known theatrical film role was in George A. Romero's Land of the Dead as the head zombie, "Big Daddy".