i give lucas great credit for tinkering with his series. it kind of proves how much he loves them. most directors shoot a film and then pretty much forget it.
i've also never been outraged about the "greedo fires first" scene. to me, it doesn't detract from han. in fact, it fits right in with the scene. greedo mutters something about waiting a long time to do this, fires, misses, han fires back. han stays out of prison for murder because greedo fires first, greedo is dead, han keeps his reputation. no problem. this is kind of a borderline litmus test for going over the edge from serious star wars fan to star wars nutcase. if you are outraged by the new "greedo fires first" scene, you may not be complete lucas-hater-one-week-boycott-no-lifer, but then again, you may be headed that way. be cautious!
to the above poster who dumped on RotJ, i have only this to say. that movie still has the best space battle of ALL the movies, and it has (IMO) the most dramatic lightsaber fight. it also has the emperor. it is still my personal favorite. but suit yourself.