Back in around 2003 Mike Boas released "The Rebirth" on the internet and became one of the more interesting fan films out there. It tells the animated tale of Jason after he witnesses Alice beheading his mother connecting Parts I and II together. Now, I don't subscribe to the this story at all, as I see the end of Part I as a dream. At any rate, it's very nicely done and very nicely animated. It won several awards from 2003 - 2005 and rightfully so. Give it a watch and see for yourself.