What is a Puzzleball?

Ok so I have had a few questions asking me about the New Moon Puzzleballs, since some have never heard about it. So to put it simply it's a puzzle that forms a ball. Each puzzle piece is a little curved and easily fits with eachother to form a smooth and solid ball. Luckily I will be getting the 60 piece puzzleballs of Edward, Bella and Jacob. I will also get the 240 piece puzzleballs which will have Bella, Jacob, Edward AND the Cast. They are coming out in October/November, pre-order the 240pc puzzleballs at TwilightNthings.com. I think these are so unique! What do you think?