I used mine at the track for a long time. I actually believe that watching other people drive -- repeatedly, in detail -- helped me smooth out my own style and get better at hitting track points. I also carry it diving, though my dive videos are thus far pretty mediocre. Still, it's nice to be able to come back with *something* to show for all that time underwater. It's also handy for time lapse -- I don't mind leaving it out in awful weather to catch a sequence that I wouldn't put a real camera out for.
(shrug) Is it worth getting The Latest? I seriously doubt it. Well, unless you're awesome, which I am not.