Ok, so I had to do another one... who knows, maybe I'll make a whole series of these artistic cop-outs!
Anyway, we ALL know how bad Harry Potter fan fics... hell, FANS... can be. Don't get me wrong, I love the books, and I've written my share of fanfiction(though I always try to avoid to stereotypical). Good HP fanfic is hard to come by... but when you find it, its well worth it.
Unfortunately, its the millions of fics that taste of bile that you have to weed through that discourages even the most avid fanfic readers. The horrible Mary-Sues have taken the HP fandom by storm and won't go away, no matter how many exterminators we try to call. Even the Ghostbusters ran screaming.
The most common Mary Sue problems: Exchange student(from America 99.9% of the time), flawless, beautiful, some object or just natural talent of extreme power, Gryffindor, Harry's(or Sirius', or Remus', or Oliver's...) love interest, and Voldemort's daughter. I'll admit I have a character who's related to the Dark Lord, but not so directly, and it was actually a pretty damn good connection if I say so myself.
So, here then. I'm mocking Mary-Sue, bad crossovers(Hellsing, anyone? Mmm, Alucard...), and the evils of self-insertion(writers, please don't do this... or if you do, make sure you're actually as interesting as you insist you are). Also, the stereotypical Clueless!Harry. Even I've written him once or twice.
Oh, I almost forgot to mention the 1337 speak! Ah, teh evilz.