If you've ever been involved in role-playing games in any way ever, you simply must go read
Twenty Sided. Among the many posts on the blog, Shamus is providing his readers with one of the funniest webcomics I have ever seen:
The DM of the Rings. Picture this: you're a DM with a group of almost exclusively hack-and-slash players (we've all been there, most of us on both sides. Except the role-player over there).