This product is very very cute, but is it over-the-top in the design stakes. I was lucky enough to try one of these without spending any cash on it, certainly something I would not buy by choice, but it has its place in the iPod case market.
The Griffin disko offers protection for the 5th generation iPod, also known as the iPod video. The case is made from a clear hard plastic that protects all of the iPod, including the screen from knocks and scratches. What makes this unique is the tiny LED's that surround the iPod clickwheel. The case is activated by motion, so a quick shake and the LED's randomly light up, if you keep the iPod moving, they keep flashing, if you keep still the action stops after a preset amount of time. The only shame is that the LED's do not flash in time to the music you are playing.
As a case it offers good protection, as a gimmick it has a limited audience. Maybe for the younger female user it'll be ooohed and ahhhhhed at for a while, so could well make a nice gift.