This is the only lightsaber battle between a Jedi and someone who doesn't use the Force. Someone like that wielding no less than four lightsabers (and he's almost entirely mechanical to boot) must be analogous to sacrilege for the Jedi. This shows just how degraded things how gotten with the Jedi during the Clone Wars. It's practically a perversion. You have to admit though, seeing all those lightsabers spinning like that is a fantastic sight. I also like Obi-Wan's composed and almost amused attitude before the duel. The rest of their confrontation is pretty exciting too, from the chase to the finale on the platform, where Obi-Wan, very ironically, uses an "uncivilized" blaster to defeat his foe.
(Note: The picture above is my second favorite visual effects shot of Revenge of the Sith. The first is here.)
