My brother, Charles Hatfield, is a professor of English at CSU Northridge and a comics scholar who has written or is under contract to write several books on comics, comic strips, graphic novels, sequential art or whatever description is au courant.
Now, if you're the kind of person who automatically dismisses comics etc. as juvenilia you should read no further. You will be baffled by the level of discourse, and you will probably need a sea change in your attitudes toward comics in order to appreciate it. (Scott McCloud's Understanding Comics should be on your reading list).
On the other hand, if you've already embraced the idea that comics are a unique medium that is fully able to express serious, thoughtful, intellectually challenging material, then you will enjoy this new blog. Here, my brother and colleague Craig Fischer have high-level discussion of all manner of comics, etc. Enjoy!