Fantasy writer and Geek Out favorite Neil Gaiman's work might be just about as far away from the tween fare of "Twilight" as anything that also bears the "fantasy" genre tag. But don't expect Gaiman, who will play an animated version of himself Sunday on an episode of "The Simpsons" that sends up the Stephenie … Continue reading Neil Gaiman cranking out 'tween lit'? Only on 'The Simpsons'