This fisheye lens from Japanese company Digital King is absurdly bulky and not at all practical. So we sort of love it.
Attaching to the iPhone through a magnetic metal mount system (you'll need to mod your iPhone with a metal sticker, it seems), this $US100 "extremely high quality lens" stretches your iPhone's field of view to epic proportions. If only the phone's integrated camera were of a decent resolution, all this fuss may be worth something. Until that day comes, we're just glad to have come across the product for another 30 seconds or so of amusement. [DigInfo and Digital King via CrunchGear]