I've captured some fun moments with the kids on my go pro. Just today I was teaching my youngest to boogie board and so I wore it for a while as I taught him and then stuck it on his head while he was riding. We got some funny stuff.
A couple of months ago I stuck it on my Cub Scout's heads as the raced down the hill in their soap box derby cars. Those were great videos too.
Wouldn't mind getting video of me surfing or something except that you know, it would have me in it...