I watched Salo once. Not really my cup of tea. : I do have the four disc special edition of Caligula. I've watched the film about three or four times. Pretty dreadful but there's some good bits. I'd love to have a copy of Film Four's own edit. Apparently they cut out a lot of smut (and let's be honest, most of the smut in Caligula is pointless and slows the film down) but left in some of the better scenes that were cut from the original video release, e.g. when Caligula orders his soldiers to attack the papyrus. That was probably my favourite scene. As for Scarface, I'd rate the film 3/5. Al Pacino gives his worst performance but there's plenty of entertaining scenes. Not sure why people try to compare it to other gangster classics, such as The Godfather, Once Upon a Time in America and Goodfellas. Scarface isn't a patch on any of those films.