Thomerson starred as Jerry Baskin in the series Down and Out in Beverly Hills in 1987. From 1994 to 1995 he starred as Sgt. James “Buddy” Zunder in the television series Sirens. He starred as Dave “Thunder” Thornton in the TV series Land’s End from 1995 to 1996. Thomerson has starred in several movies including Carny, Fade to Black, Take This Job and Shove It, Jekyll and Hyde… Together Again, Trancers, Who’s Harry Crumb?, Trancers II, Trancers III, Trancers 4: Jack of Swords, Trancers 5: Sudden Deth, and Fear and Loathing in Las Vegas.