The Dali inspired orgy/human consumption climax to
Society (1989) really creeped me out. Shitty movie but kick-ass special fx by Screaming Mad George.
Here's a taste
http://farm4.static.flickr.com/3021/...d24a40.jpg?v=0
As for most cringeworthy, did anyone see Takashi Miike's installment of
Masters of Horror? The episode is titled
Imprint and Showtime banned it from airing it due to it's cringeworthyness. One unflinchingly graphic torture scene was quite brutal, as I was watching it I said to myself, "I am really glad they didn't put this on TV"
Quick sub-genre: Most Gag-worthy scene
The puss in the custard scene from Peter Jackson's
Dead Alive (1992) remains the only scene from a film that made me gag. Many have made me feel like gagging but this one took the cake.