Just got back from the opening night showing of Episode III.
Well, I'm a little too exhausted right now to write about the movie at great length so just some general observations.
-is (arguably) the best movie of the prequel trilogy.
-overdoes it quite a bit visually sometimes - less would have been more IMO.
-is the darkest of all Star Wars episodes.
The scene in which Darth Sidious is revealed is brilliant! Has a good built-up, an intense climax and a resolve pushing the plot further. Even though the acting is just slightly above average in the whole movie, in moments like this it shines.
The birth of Darth Vader is - gruesome! Far more intense than I had anticipated. Even though the fateful duel during which it happens is one of the moments in which things get overdone visually, Lucas turns it down in terms of effects just in time to deliver a transformation that is painful to watch. Plus, it's interwoven very, very nicely with another climatic incident - I felt a little lump in my throat.
The Emperor kicks ass mightily! Great job, McDiarmid! Yoda gets really nasty, too, and has the best one-liner in the movie. (Still, his character is vastly superior in the old trilogy.)
Well, as mentioned above, plus, I feel a little sorry for Christopher Lee's part in it. He unfairly got cut out of the theatrical version of Return Of The King and he only fares little better in Episode III. The guy who replaces him as a villain - well, that is a subplot I didn't like at all. A totally unnecessary flexing of CG muscle. I feel that since now everything is possible in movies not everything has to be possible ...