Anybody have tankbots?

My sister and I were looking for something fun to buy for the iPad 2/iPhone 4s/iPod touch when we stumbled upon Tankbot Robots

Does anybody else have them? If so, are they fun? Do they work? For only $25 we would be buying two, in different colors of course, if they are pretty fun.

Thanks!

 

I bought one from Toys R Us to use at my desk at work. I love it, it's not exactly the most stimulating toy but it's fun to control with my iPhone or iPad on my desk.