I finally saw the doc yesterday (
found it not on a site that not called jpopsuki) and I must say it's ok. It's not that great I thought it would be.
And am I honest the only new thing I learned about X was that Hide picked some bones out of Yoshiki's fish in restaurant and that Hide talked to Yoshiki about the last live what they could do if the already brainwashed Toshi say something inappropriate.
Oh, and that thing where they were in L.A. and a junk come along and asked Hide and Yoshiki if they have any X (XTC) and Yoshiki replied "We are X!".

But I didn't want to say that it's not worth to watch it. It's really ok, but I think if you are new to X and don't read the biography of Toshi and Yoshiki and don't really know the history and the music of the band, than you will not get really into it (sorry, my english is not that good. I really can't say what I want to say). The documentation is to short for this.
And also it's all about Yoshiki. A bit from Toshi. But I really want to know how Pata joined X and where they met Hide...