Complex sentence: Davison subsequently appeared alongside Dickinson as the Dish of the Day in the television version of "The Hitchhiker's Guide to the Galaxy" (1981), whose producers considered it humorous for an actor known for playing a veterinary surgeon to appear as a cow.
Split into simpler sentences: Davison subsequently appeared alongside Dickinson as the Dish of the Day in the television version of "The Hitchhiker's Guide to the Galaxy" in 1981. The producers considered it humorous for an actor known for playing a veterinary surgeon to appear as a cow.