Whoa, this is the coolest thing we've seen an app do in a while.
Cycloramic uses your iPhone's vibration and sensors to rotate itself and take a 360-degree video. Only works on flat, hard, shiny surfaces. But really, the video is probably secondary. IT MAKES YOUR PHONE DANCE.
It's one of those rare apps that's creative enough to get you to notice it, but also useful enough to not be a use-it-once-and-never-again gimmick. Well, probably. At the very least it easily makes the hypothetical Letterman Stupid Phone Tricks list. That is, until you use it somewhere dumb and your phone falls off a table.
Download this app for the iPhone for 69p