Matt Groening, a member of the band Rock Bottom Remainders, is not the only Simpsons producer to have been a member of a rock band. In the early 1970s, James L. Brooks played lead guitar in Mary Tyler and the Moores.     Prolific Simpsons director Mark Kirkland has six fingers on his right hand.     John Swartzwelder, writer of over 50 episodes, has not been seen in public in over eight years.     Voice actor Harry Shearer left the show in 2000. Fortunately, the producers had recorded voices so far in advance that Mr. Burns, Principal Skinner, and Dr. Hibbert will still continue to entertain audiences well into season 35.     During the production of the episode "Alone Again, Natura-diddly," it took well over 27,000,000 individual drawings and 50,000 man hours to fully jump the shark.     Bart Simpson has nine spikes of hair on his head     Not only did Matt Groening request his name be taken off the episode "A Star is Burns," but he also took it a step further by requesting the federal government to destroy all official evidence of his existence, including his birth certificate, bank statements, social security number, and driver's license.   Numerous portions of former Simpsons director Brad Bird's first draft of "The Incredibles" were plagarized from the episodes "The Last Temptation of Homer," "Homer Alone," and "Marge vs. the Monorail."   Conan O'Brien wrote every episode between Seasons 2 and 7. His departure from the show to host "Late Night with Conan O'Brien" directly led to the decline of the so-called "Golden Era".   Every dollar you spend on Simpsons merchandise helps Rupert Murdoch spread more neo-conservative propaganda through the conduit of his many media holdings throughout the globe.   Writer George Meyer came up with the "Homer steals a large amount of sugar" subplot of "Lisa's Rival" after stealing a large amount of cocaine.   Showrunner Al Jean possesses the world's third-largest ball of twine.   In 1986, Matt Groening did three animated "Life in Hell" shorts for "The Tracy Ullman Show" that involved Akbar & Jeff engaging in many illicit acts before producer James L. Brooks asked him to come up with something new.   According to voice actor Dan Castelleneta, "D'oh!" is a shortening of popular 1940s film star Oliver Hardy's anti-Semitic catchphrase, "Damn Jews, why won't they just go?!".   In a few frames of "Some Enchanted Evening," Lisa's red dress was colored with the menstrual blood of several female animators.