Wow Insider has a nice link list of World of Warcraft related comics for the past week. I've added two that are WOW-specific comics to the World of Warcraft link list.
For my own Sunday comic I'll be using a variety of comic generators because, unlike the talented people doing the comics in this article, I haven't the slightest artistic ability. Just imagination, and lots of it. It will have to do.
Some Online Comics Generators: