Courtesy of my buddy adgy on LJ, here is a massive online archive of all things Kurosawa. Note that you do need some comprehension of Japanese to make sense of it all, and it uses this horrible Flash-driven front-end (die! die! whose brilliant idea was that!?), but you could easily lose a few days in there.
Would that my comprehension was better, or I would use it as a companion to my as-yet-upcoming discussion of the Kurosawa memoir Waiting on the Weather.