I've been "exploring" on the wiki. They say that Napoleon Dynamite is an inappropriate character, but the film is rated PG. And they have pages for South Park on there. What hypocrites.
Pooh's Adventures. A meme that sounds quite regular for a strange mind at first, but when you find out that they have plans for a family-friendly "Pooh's Adventures of Avatar", then everything is ruined.
Join me as I take on the worst and most bizarre of these fan-created crossovers, watching as much as I can and browsing the wiki to see what other ideas they have up their sleeves (and won't bother to complete).