Off the top of my head, I'd guess the scenes would be:
Episode 1: Battle with Anakin blowing up the Trade Federation Ship.
Episode 2: ?
Episode 3: Battle at the beginning of the movie (when would this one end? when the enter the hanger or when the ship crashes on Coruscant? If I skip all the stuff that happens in the ship but include stuff before and after, then we're missing a big piece of the story. In my Lightsaber Duels DVD, I don't think that the storyline is compromised WITHIN the scene, sometimes there really isn't a storyline.)
Episode 4: Death Star battle
Episode 5: Asteroid field chase?
Episode 6: Death Star II battle
The thing with the Lightsaber duels are that they are uniquely Star Wars. Space battles really aren't. (I know that you can make a case that lightsaber duels are just sword fights, so they aren't unique. But, anyway...)
@WESHALLPRESERVE: Clone Wars Volume 2 isn't out on DVD yet. Besides, what lightsaber duel in it actually rivals Anakin vs. Ventress?