The internet is a treasure trove of mostly two things: Scenarios depicting an all-out brawl between the Dark Knight and the Man of Steel, and pornography. One of the better instances of the former comes from animator Stephen Byrne, who recently put out a delightful short cartoon in which DC's two biggest names square off. It's one of the most logical ways that such a battle might play out, but the style and execution is to be admired.
Byrne is also responsible for a handful of Saturday morning cartoon-style intros for cult TV shows. Below you can see "The Animated Adventures of Buffy."