I really like the way it all flows together, it makes the fight more exciting.

A few notes:

- Definitely lose the music, it just doesn't feel right at all. I'd go for something much more subtle than that. Maybe a rendition of the Emperor's Theme?
- I'd highly recommend working with the lightsabers to make them look more like they should be, especially in the shot where they cross in front of the Emperor's face. I know, they're all screwed up on the official DVD, but that doesn't mean they can't look awesome in your edit, right?
- I don't know if this is your plan, but if you put the whole fight in one go like this, it makes it feel very short. I'd cut away to Endor or the space battle after Vader throws his lightsaber, then come back to Vader hunting for Luke a few minutes later. It'll make the fight feel longer.