Short films both of them, about an hour each, but they both have the same theme: Snuff. Not particularly good films, but interesting if you like this kind of stuff.
An interesting story about the second part, Flowers of Flesh and Blood, is that when Charlie Sheen saw a crappy bootleg version at a party in the 90's he reported it to the police and the FBI and they had a fullscale investigation, trying to find out if it was real or not.
For more info about:
- the Guinea Pig films (and their DVD releases), check out www.guineapigfilms.com
- Snuff, check out http://en.wikipedia.org/wiki/Snuff_film
If you want to read about snuff films (and mondo films), check out David Kerekes and David Slaters book Killing for Culture: Death Film from Mondo to Snuff (Creation Cinema Collection). London: Creation Books, 1996. A highly recommended book.