(don't know if someone else said this since I've only skimmed the replies)
Lucas years ago (sometime around when the original Star Wars films were released), he went to Congress I believe, and tried to make it so that it would be illegal to alter and edit films once the final product was released,saying that in the not too distant future, people would be able to add in people/things that weren't in the original, alter people's appearances, make their lips move and add in things they didn't say, stuff like that. And what do you know, Lucas did that himself twenty or so years later.
More on topic, he deserves all the hate and then some. Besides being a hypocrite (see above), and whenever he's in charge of writing and whatnot (see the Star Wars prequels, and Crystal Skull), the films turn out largely bad. Let's not forget the fact that he whores the shit out of Star Wars, as well as just screws with the story so much (Apprentices can't have their own padawans, but Anakin gets his own in the Clone Wars CGI series, which takes place in-between a scene in the Clone Wars animated series, which it itself takes place in-between the second and third film. There's a three year gap between SW2 & 3, and the scene in the animated series that happens after the events of the CGI series takes place not too long before the start of SW3, and AGGGGHHHHH!)