French manicures. ESPECIALLY on toes. I have the most visceral freak out over them.

And some to chime in on...

Little kid beauty pageants (splitimage, I'm so with ya on that!)

Microfiber (thanks to Goodquestion for that reminder). It always catches on my hands. Shudder. (And what is it with the proliferation of microfiber towels?! They have no absobency whatsoever(!))

Kidney and liver as foods. No way.

Tweekers and junkies (needles altogether wig me out while we're at it)

Clowns, but that's nearly universal.