After graduating from CalArts, Moore worked for Ralph Bakshi on CBS's "", co-writing all 13 season 1 episodes in 1987. Moore was one of the original three directors of "The Simpsons", directing 17 episodes in the first 5 seasons from 1990 to 1993, including the episodes: "Flaming Moe's", "", and "Marge vs. the Monorail". He won a 1991 Primetime Emmy Award for Outstanding Animated Program for "The Simpsons: Homer vs. Lisa and the 8th Commandment", and was the sequence director on "The Simpsons Movie" in 2007.