You know those sushi places that have the pre-packaged rolls hypnotically scrolling by your face endlessly on a little conveyor belt? Well, picture exactly that but with virtually every major Android device ever made instead of sushi. That was just one of the many visual treats we experienced at Google's Android booth at Mobile World Congress this year -- along with a dozen or so brightly-painted giant Android statues and a fully-functional slide from the second floor down to the first. We'd estimate there were perhaps 200 phones and tablets on the belt, ranging all the way from the original T-Mobile G1 up to prototype versions of the HTC
