Hmn, not a very well composed list, unless you're JUST looking for gore. Otherwise not including Nekromantic, Pink Flamingoes and I Spit On Your Grave is fairly inexcusable.
A lot of its down to personal taste I suppose. I don't have a problem with pretty much most gore, but, for example, the vomit eating sequences in Meaning of Life and Bad Taste, and the shit eating bits in Salo and Pink Flamingoes make me feel somewhat uncomfortable. Of course, in Pink Flamingoes its worse because it's a genune honest to god fucking dog turd scooped right off the street.
Man, I seriously hope the recent remake of Hairspray has induced some people to check out the original, and then Waters other films. I can barely describe the sick joy I feel imagining the type of person who enjoys the remake of Hairspray seeing Pink Flamingoes. Though of course (and speaking of animal cruelty) most of them would probably have switched off about ten seconds into the scene where Crackers fucks that chicken to death.