Just to list a few from different universes....
Marvel: Cable and Nightcrawler
DC: Batman (of course)
Image: Spawn (bought issues just to see how many ways they could draw his cape) / Darkness (same, was all about the artwork)
Other: Conan (I love the stories and artwork, kept true to the frank frazetta style and the fantasy theme was cool and different)
Also....anyone ever read Rising Stars by JMS? Was a pretty interesting story at the time and I felt like it sparked alot of future series and tv shows including Heroes on nbc. It's too bad they cut it short early cause of drama.