i know, right. i just watched the video- not terrible at all; although certainly not pleasant sounds. perhaps my medula oblogata is damaged.
the worst sound in the world, imo, is that crunching damaging sound of an accident or when someone falls and bashes their body and they do that deep, horrible moan of death. yuk!
edit- good call on the dentist drill. it would be nice if they could give you novacaine and earplugs to block the sound out- maybe a set of noise canceling headphones or something.
The sound of a bone breaking. And when it is my own it is the sound and that bright flash in my brain that goes with it. Gruesome.
Oddly, nails on a chalkboard do not bother me. Back when there were actually chalkboards in the class room (now all are marker boards), placing my nails on the blackboard in preparation for a long deep scratch was a VERY EFFECTIVE means to get students' attention. :)
In an interview with a sound effects guy, he was asked if there was one they couldn't use or something to that effect. "Oh, yes" they had needed a sound effect for a body hitting pavement and had the bright idea to get up on a ladder with a watermelon... only the resulting sound was too gruesomely suggestive to be used in the movie. I can personally attest that a large piece of pumpkin from about 180 feet onto a stone terrace is pretty good.
Let us know!