Many of the show's staff left after the season ended. Jay Kogen, Wallace Wolodarsky, and Jeff Martin stopped writing episodes when the season ended. David M. Stern and Jon Vitti left, but they came back years later to write more episodes. Al Jean, Mike Reiss, and Rich Moore left to make "The Critic". Jean and Reiss came back to "The Simpsons" around the 10th and 13th seasons. Rich Moore came back to help with animation for "The Simpsons Movie". This was the first season to have animation done by Film Roman instead of Klasky Csupo.