I don't really read many comics/graphic novels, but I've been increasingly interested in their educational value (see my earlier blog post). Edutopia has a great article on how schools are using comics to promote learning. It's an interesting "trend" that apparently goes back quite a while.
Stan Lee (creator of Spider Man) also has an article on how comics can increase a kid's love of learning. It's brief, but I think it's really well done and speaks to those of us who have ever taught or raised a kid who doesn't like to read.