I recently posted some info about a few graphic novelists and places to buy comics, but I also wanted to share some links that might be helpful if you want to teach a lesson on comics. These resources have many applications beyond comics too!
Posemaniacs has a large collection of poses to help with figure drawing when you don’t have a model around. This can be a great resource for students while they’re drawing characters in their comics. It’s also useful for any other type of figure drawing project.
I like to look at the zany news events on Obscure Store for inspiration for story ideas, but be careful showing this site to younger students (some stories have sexual content).