ice cream maker/ball

i’ve seen this pretty cool contraption on the interweb and the food network before. it’s an ice cream
maker in the shape of a ball:

you basically put all the ingredients in and then you kick it around for a while. eventually it make
some ice cream. might be fun to buy it and maybe make it at work with my coworkers. has anyone
tried it before?

[via: Amazon - Ice Cream Ball - ~$29.45]