The season was executive produced by Al Jean and Mike Reiss, who had also run the previous season. Several of the show's original writers who had been with the show since the first season left following the completion of the season's production run. "Cape Feare", which was the final episode to be produced by the "original team", aired during season five as a holdover. Jay Kogen, Wallace Wolodarsky and Jeff Martin wrote their final episodes for the season four production run. David M. Stern and Jon Vitti also left but returned to write episodes for later seasons. Reiss and Jean left to produce their own series, "The Critic", but later returned to produce several more "The Simpsons" episodes, and Jean again became the showrunner starting with season thirteen. Rich Moore, one of the show's original directors, also left to work on "The Critic", but returned years later to assist with animation on "The Simpsons Movie". George Meyer and John Swartzwelder stayed on, while Conan O'Brien, Frank Mula and future show runners Bill Oakley and Josh Weinstein received their first writing credits. One-time writers for the season include Adam I. Lapidus and the team of Gary Apple and Michael Carrington, although Carrington later returned to voice characters in "Simpson Tide" and "Million Dollar Abie".