Wow. It actually is very good.

Rating: 9/10 (23 May 2005)

I was surprised at how good this was. Aside from some awkwardness present in nearly every scene involving Padme, this was an impressive movie, and ranks neatly beneath A New Hope and Empire for me.
The fights were all excellent, the final one being the best in my mind. One thing about the Windu/Sidious fight though. Mace won the sword fight and died. Sidious lost the sword fight and survived. He had the advantage of foresight without morals to hold him back. Palps knew the Jedi's weakness. Their honor code is too bloody inflexible. Mace had him beaten and all he did was point the saber in his face. By the time he made his choice it was already too late. Once Sidious had the advantage he ended it without hesitation. It's extremely debatable, though. Is that a first for Star Wars? ;)
It is interesting - maybe frightening for some - to note that Mace didn't really "die" on screen. Maybe George is saving him for the TV series? Blah, I got that off some forum.
Anyway, "Order 66" and Yoda's reactions during the executions were every bit as heart-wrenching as Han Solo's dull thud on the floor as a slab of carbonite. Moreso, I'd say. It would be even better if we knew a bit more about the ones that died.
The final duel was the best in all the saga. These guys actually looked like powerful fighters and not stiff old men.
I'd also say the acting was better, except for Portman, but she was fine. The editing was also great. The effects were wonderful. The pace was great. Technically, this is the best Star Wars movie. But we all know atmosphere and effects aren't everything. In this case they're just icing on the cake.
9/10 P.S. Vader's "nooo" will be parody fodder for years to come.