This is hardly a big news flash, but if you haven't heard and you haven't already seen it (4 or 5 times): Star Wars: Episode III - Revenge of the Sith is really good.
It's one of the best Star Wars movies, much better than the other two movies in this latest trilogy, as good as The Empire Strikes Back and Star Wars itself. For a series that seemed to be running out of steam, this last movie is a very satisfactory ending that really brings the story full circle. It's a deserving and fitting end (at least, so far) to an excellent series.
One note: This is not a good movie for young kids. Multiple characters meet quite gruesome ends. If these scenes don't freak out the average pre-teen, they should.
I'd like to discuss various plot details, the meaning of some characters, etc. But in the end, who really cares what I think? Just go see the movie, it's really good.
Bill has references a professional review: NY Times reviews "Revenge of the Sith". (Oh, and to the comments on there: This Star Wars movie is a whole 'nother galaxy from the Hitchhiker's.)