As a rule, I typically steer clear of fan-made stuff. No matter what the fandom or whether it's a fanfic, animation, etc., you can usually expect it to be a lame and a complete waste of time. However, every once in a while, you'll find some quality fan-made stuff out there. Monty Oum's Dead Fantasy animation series is a good example. To be honest, I don't really know what to say about it other than it features a bunch of Dead or Alive and Final Fantasy characters (mostly female) duking it out, and it's freaking sweet to watch. In my opinion, the animation and choreography of the fight scenes is really impressive, and each new video gets better and better as more characters are thrown into the fray and the action builds. A sure delight for Dead or Alive and Final Fantasy fans, alike. Be sure to watch in the highest quality possible.
Monty Oum's YouTube page can be found here: Monty Oum's YouTube Chanel