I can be very bothered by loud cars, but I love to watch Top Gear and listen to the sound most cars there make.
Sometimes when a motorbike drives past me at 13,000 rpm, preferably when I least expect it, is startling to say the least. But when I drove my bike at high revs I was utterly happy. Still have a recording of the sound here
Loud music can be annoying (mostly when you only hear the bass droning) but when dancing, it is almost obligatory.
Chalk on a schoolboard yea, but my dad can't stand the noise a scrapy knife makes on a plate (very similar) but I always try anyway.
Children or birds: the happy cheers little children make, or better yet a laughing baby is music to my ears most of the time. I'm not sure when the cheering starts to become yelling.
Movie sounds, the same: can be annoying if it's coming from next door, but when you're actually watching the movie yourself, it immerses you. I'm not sure at what sound level cinemas play but it definately doesn't annoy me, but I think it would if it was coming from a house accross from where I live.
Once again, "Einstein's relativity theory" seems to be correct.
When focussing on something, even birds can be annoying. If you don't feel well, almost everything seems to be too much.
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