The 2011 Warren Ellis documentary Captured Ghosts is now free to watch on Youtube. As someone who started with Lazarus Churchyard in issue 1 of Blast it does make me feel rather old. (As does the sight of Taliesin Jaffe with an unshaved head.)
Not remotely safe for work. Goodness me no.
The Grant Morrison documentary by the same director, Talking With Gods, is soon to follow.