Check out Episode III - A Lost Hope from Sequential Pictures, a hilarious low budget star wars spoof. A little help with the crazy Star Wars backdrops from scifi3d.theforce.net. Amazing really since it only took about 3 months to put together.
This is defiantly a site worth checking out: SEQUENTIAL Pictures. Also worth a lookin is "A Glitch in The Matrix". I don't know how much time and money these guys invested in making these movies, but for low budget Internet download spoof/piss takes they are pretty amazing. I remember a while back a friend of mine showed me a Star Wars piss-take "Beer Wars". It was quite funny with Budweiser as the baddies invading calgary and Big Rock playing the part of the rebel alliance.. check it out here.