I finally got around to buying the original Star Wars trilogy on DVD (well, original in that it's the "special edition" series). Tonight I watched Return of the Jedi to find that there was yet another change right at the end, presumably only for the DVD.
When the galaxy is celebrating and they're having a good time in the Ewok village, you may recall the Jedi ghosts of Obi-Wan, Yoda and Anakin hang out. What they changed is that the ghost of Anakin is now played by Hayden Christensen instead of the guy that originally did Darth Vader, Sebastian Shaw. I think that borders on disrespectful to the guy that we all associate now with the unmasked bad guy, especially since he's been dead for 11 years.
The other thing is, if Hayden gets to be the ghost, then why wouldn't Ewan McGregor be there as a young Obi-Wan? You've gotta figure that Anakin, at the time of his death would be somewhere around 50 at least (the actor was like 78). Even Yoda then should be a spritely 400.
I was never against the special edition version of the films, but at some point Lucas has to stop fucking with them.