i say R....the kiddies had their fun with phantom menace and left everyone else out in the cold....now it's our turn.....
joking....but there's some truth in that maybe....lucas said that this one will be the darkest, and probably will make much less money than the others, but that it was the story that needed to be told, the one for the fans.....
now i now lucas speak....the first bit is false modesty, and the second is a lame attempt to get the fans whipped up.....but maybe, just maybe, he's made his money on the first two, and he's really prepared to go out on a limb with this one, after all the fans are the ones who are going to be buying all his merchandising in 5 years time....and he's aware that he's dissapointed a lot of the hardcore....it might be worth more to him in the long run financially to focus on winning the old fans back and forget the kids this time.....
or maybe even despite that he's got enough cash now to go hog wild and do whatever the hell he wants....remember the artsy obscure films he was planning on making after star wars....maybe there's still a side of him that's not as obsessed with money as people think....
ok, getting long here....the dooku scene is shown in sillhouette, grievous is a droid so he doesn't count (old standby), and like other people have said, there's at least four on screen decapitations in ep II, and a few other bits of dismemberment.....
last piece of pertinent information: in the special editions he had all the shots of lasers hitting people carefully edited out so that it cuts right before impact....it's only a split second each time, but it's true....not s****ing ya.....