Found this via Anthony.
ComicBookDB.com is the fastest-growing comic database on the web. The first goal of this project is to catalog every comic, graphic novel, manga, creator, character and anything else that could possibly relate to the field of comics.
But that is only the beginning. The second goal of ComicBookDB.com is to make this wealth of information as useful as possible. This means making as many connections as possible from one issue, one creator, one character to everything else in the site.
Best of all, ComicBookDB.com is built by anyone and everyone who wants to help. Fans, creators, publishers, anyone who has information that is useful is welcome to register a free account and start contributing.