Attached Link: http://www.hollywoodedge.com/samples.aspx?SID=7&

It's your lucky day! they have one in "The Hollywood edge" free samples. Look for "ping" at the bottom. I have one of their effects libraries, and while expensive it's worth it for the sheer quality, if you wanna do anything commercial with animation you might wanna look into that. I also use Sounddogs.com quite a bit, to fill in the gaps in my Hollywood edge library. You can purchase and download individual effects from many different libraries there (so quality can differ) But you get to listen to the sounds and the prices are... reasonably reasonable :)