Science fiction author David Brin wrote an interesting review of Star Wars I: The Phantom Menace and has recently followed that up with one on The Attack Of The Clones. Both are incisive, although perhaps dwelling a little too long in critiquing the pseudo-Campbellian mythology inherent in Lucas' vision. Many of the annoying plot disparities and outright illogicalities are cited, although he does admit that the special effects and music were dazzling. Still, he echoes my thoughts about Episode 3:

Despite every flaw, there IS a way that Lucas could weave all the threads together and pull a miracle of cinematic legerdemain, causing it all to make magnificent sense.

I'd wager my house that he won't do it.