I'd be glad to partake in a discussion about John's (and Michael Shulman's) essay "Lectures on n-categories and cohomology". I picked it up when John first mentioned it in a lecture here, and I can't let go since!
On a different note, I'm still puzzling about how to categorify database editing. I might be pushing the database metaphor too far. Or not, as it seems I might be able to combine what I know about monads into something which then describes the editing primitives abstractly. I suspect I might find answers in the papers Ryan Wisnesky suggested, which I'll check very soon.