A sort of stretchy noise made really loud by Schneider TM live at King Tuts in Glasgow - it made me laugh uncontrollably.
The weird hard to define sounds on Systemisch by Oval.
The last note of Goldberg Variations by JS Bach played by Glenn Gould (1982 version).
Blackbird singing +1
Woman's orgasm +1
Wine glugging out of a bottle.
A waterfall.
I once climbed The Five Sisters of Kintail (it's a mountain ridge you filthy monkeys). It was a perfect sunny day and I could see for about 40 miles. I could not feel even a breath of wind. But I could hear a funny papery sound, tiny and very delicate. I saw three butterflies fluttering around each other. It took me a while to realise, and another while to believe, that what I could hear was the sound of their wings. At 3000 feet above sea level in the Scottish highlands.
Yay. Cool thread.

MacBook Pro Retina, Live 9.5, Reason, UC33, KRK RP5s, Teenage Engineering OP1, Korg ESX2, Korg Prophecy, Clavia Nord Lead, Bass, Guitars.
http://soundcloud.com/motorradkinophone