Episode III was great. Really, the only Star Wars movie I don't like all that much is Episode 2: Attack of the Clones.
I agree. The ground battle at the end was cool and I liked how Natalie Portman was dressed (you know what I'm talking about lol) but the rest of Episode 2 was flat. Ian McDermid really stole the show in Episode 3. Did a very good job as the emperor.