My limited edition Anchor Bay VHS tapes of Evil Dead and Army of Darkness are pretty cool, and they are individually numbered out of 30 000 i think. The AOD tape was the first ever release of the Directors Cut, which was pretty special at the time. My two-tape Terminator 2 special edition VHS set was awesome as well, a big box set containing the VHS of the extended version and a second tape with trailers and stuff. My Dawn of the Dead 2-tape Directors Cut was the prize of my VHS collection when i bought it. I also had Document of the Dead and Hearts of Darkness, two very rare documentaries.
And yeah, Salo is like the rarest video of all time. I never understood the fasination with it--its a very poor film to be honest.