Complex sentence: Prior to forming Graymark, Frederickson produced My Five Wives starring Rodney Dangerfield and Andrew Dice Clay and also South of Heaven, West of Hell starring Dwight Yoakam, Vince Vaughn, Billy Bob Thornton, and Bridget Fonda.
Split into simpler sentences: Prior to forming Graymark, Frederickson produced My Five Wives starring Rodney Dangerfield and Andrew Dice Clay. He was the producer on West of Hell starring Dwight Yoakam, Vince Vaughn, Billy Bob Thornton, and Bridget Fonda.