.:.impossible. wrote:SPACE IS THE PLACE is a fascinating read. Just about anything I've ever wanted to read about was touched upon in that book. Ra was an ecclectic and idiosyncratic dude.
Joyful Noise is a great documentary about Ra. If you are a fan or even just slightly curious seek out this film. It is much more than just performances, you get lots of face time from Ra spouting his brilliance.
And if you dig cheest blacksplotation films the movie Space Is The Place is a hoot, but gives you little true insight into the workings within Ra's head.