I'm on the fence on this. Defo cool for kids, but not sure about adults.
But maybe thats just cos I'm scarred to try to do them now, incase I fall off and look even more like a fool.. It has been nearly 20 years since the last time I did one. But everyday on my way home I think maybe I should give it ago. Then remeber I have a big rack on the back of the bike, and decide that it most defainatly not wise to try with that on teh back, and then when I haven't got that on teh back, I'm usualy out with my son, and don't want to look like an idiot in front of him by falling off.