Hardware Wars - Earliest Star Wars Parody?
Thanks to my Dad who simply has an affinity for finding and appreciating this kind of stuff, I have come across what the uploader is claiming to be the first Star Wars parody. Created in 1977, this video seems to prove the date with the special effects and scenery filmed. Anyways, watch it yourself, as it is actually quite entertaining and funny.
It's arguable that more effort was put into this parody than there was put into any of the three prequels.