I have alot of the DVD's and books on the market out there : Russian Judo, Extreme Judo DVD's, Mike Swain's, etc. Also alot of books : most masterclass, and like 10 other ones...
However, recently a japanese BB friend of mine brought over judo stuff from japan : incredible stuff. Its all in japanese though. The amount of detail they go into is unbelievable. I love it, and it too bad thats its not translated in English. I watched Koga's DVD (the new one, not the fighting films one) and also few ne-waza ones. They also had books attached to the DVD's.
There just seems to be huge judo material in japan, that is not exported for some reason : books and DVD's.
Someone needs to dig that stuff out of there.