Noise

I have been watching a series of short interviews compiled by the new york times. There was this question which I found myself answering to.

What is your top 5 favourite non-musical sound?

1. The chopping of anything against the wooden chopping board. It must be a wooden chopping board.
2. "Qiiiaaak" sound from pulling open the tab of a coke can, or any other can for the matter.
3. Heels "clocking" across a hard pavement.
4. The sound of fingers thumping furiously across the keyboard (like now)
5. Bubbling sound from a running stream of water in a creek

What is yours?