http://www.noiseaddicts.com/2009/03/...-hearing-test/
Here is a list of sounds ranging from 8khz to 22khz
As you get older, you can't hear the higher sounds apparently. I can hear from 8-15khz, but anything higher I hear nothing. My housemate who is two years younger than me can hear up to 16.
What's the highest any of you can hear up to?