Well, at long last (I was watching other stuff ok) I saw Gummo...I'm not too sure what to think about it, and yes that bathroom scene was horrible to watch.
Overall I think it really was something great, one of the better experimental films I've seen, but I'll need to give it some thought.
I saw La Jetee, 1962 short French film, which was also an experimental-Sci-Fi film. I'd recommend that to you; it's on Youtube w/ subtitles, and it's only like 26 minutes.