I don't know if any sites, but Hanshi Bruce Juchnik is coming out with a new Kata No Michi text that will have instructional dvds with it. I believe it will be ready within a few weeks. Or maybe it's even ready now. Kelly Keltner who posts here will be able to give you more details I'm sure.
Anyway, I have the Kata No Michi book and it's great. I will certainly be getting the dvds too. As I understand it, all the katas in the book (about 40 I think) are going to be taught on the dvds.