^ which reminds me... http://www.cedmagic.com/featured/star-wars-lost-footage.html

Floating around the black market limbo of sci-fi conventions and
fanboy heaven is a forgotten bootleg of "Star Wars," a film transfer
of the original 1977 theatrical release. It's interesting mainly as a
curiosity, because the transfer is awful, the image is cropped poorly,
and I'm sure that we all have much better, legal copies lying around.
Nevertheless, as an account of the minor changes made to "Star Wars"
over the years, it's priceless.

*Video differences:

First, the tape isn't really panned and scanned. It's panned all
right, but not scanned--the picture just sits on the center of the
widescreen frame. The only video difference I could find was in the
opening scroll. Not only was the "Episode IV: A New Hope" tag missing,
but the lines were formatted differently.

ely2b@aol.com adds:

Oddly enough, there is ONE visual difference. As the stormtroopers
are distracted by the duel between Vader and Kenobi, Threepio turns
and says, "Come on, Artoo. We're going." CUT to Han who says, "Now's
our chance, go!" In the version with the mono mix, these two shots are
reversed!

Can there be any truth to that statement? and is the bootleg discussed there the same source as Starkiller / MeBeJedi / TWC326 ?