Well, about 20 or 30 years ago, my mother bought a set of "Ginsu" knives off the tv. Believe it or not, I still use them for various things. In those days, the Ginsu was a long thin bladed thing with the fork at the tip. Turns out, it's the perfect knife to cut cake into thinner layers.
As for the Magic Bullet, I don't know what to say about it. I think it looks like a toy. I have to wonder if it will last as long or perform as well as a real blender. I have my doubts that it will perform as well or as long as the beehive Oster my mother bought in the early '60s which I still use today.