I wish Lucas would just release the original movies the way they were originally put out. He keeps fucking with them. The vhs copies are the only originals Lucasfilm has ever released! Lucas going back and altering the original movies once again is shameful. See below for a list of some noteable changes... or view them here

The Empire Strikes Back
The old woman who played the Emperor in Empire has been replaced by Ian McDiarmid (who played the character in Jedi and the recent prequels).

Return of the Jedi
The eyebrows of actor Sebastian Shaw have been erased in the new version, Naboo is now included among the worlds where celebrations are shown at the end of the film, and Anakin's Force ghost is now played by Hayden Christensen instead of Sebastian Shaw.

Footnote
It's also interesting to note that the lift on the assault weapons ban and the release of the new Star Wars DVD's coincide. Someone should take Lucas out with an AK-47 before he removes Indiana Jones' eyebrows.