Expanded polystyrene and/or cotton wool rubbing against itself. Those tiny little squeaking noises...
Sarah Palin.
Screaming kids.
That horrible slack-jawed open-mouthed chewing some people do. Just stop doing that, Ok?
Crunchy food, when I have to listen to it being eaten, and noisy eaters generally.
Sarah Palin. (she's worth at least two mentions for that voice alone)
Nasty sharp fluorescent lighting.
Sarah Palin. (Ok, three)
Cars driving past making that "boom, boom, boom, boom" noise (it's "music", I'm told), and generally loud enough to make my eyeballs vibrate.
And more...
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Giraffe: a ruminant with a view.