"Leviathan: The Story of Hellraiser and Hellbound: Hellraiser II" is a feature length documentary uncovering the history and the making of Clive Barker's "Hellraiser" and "Hellbound: Hellraiser II" films.
First of all, the opening credits are a bit drawn out and I wish that wasn't the case. But the rest of the film makes up for that. In fact, the Arrow Video release is very extensive, and (as I understand it) was expanded to the point that it had to be turned into two documentaries. (The first half is 90 minutes and I assume the second half is similar.) Where this documentary excels is where it goes into great detail about the makeup and special effects, because this is what really makes "Hellraiser" stand out. Also, the coverage of the Coil music is awesome, because I don't know how many people know their work or knew they had anything to do with the film. (The Arrow set goes into much more detail on the Coil-Barker connection.)