Well, Red Letter Media did do a commentary on Star Wars (DVD) and he just tore all the changes apart, it was great. In one of the reviews, I've forgotten which, he said that the SE's were "offensive", I think he described it as something along the lines of, "you're trying to watch the movie, and they keep shoving more shit on the screen to distract you," and if I remember right he referred to Lucas as nothing but a child waving his arms around for attention or something. I guess that's all that really needs to be said about the SE's, but if you want to hear him pick apart specific changes then check out that commentary track, it's on their website I think.