Hundred year old Sake producer Bridge Brewery in Nakatsugawa, Japan has put QR Codes on its bottles. The code resolves to a mobile site where you can register to be entered into a lottery. The prizes include a foot-warmer made from Mount Fuji lava and bath oil made with Sake. If that doesn’t give you agency guys some ideas for using QR Codes with interesting prizes then you are in the wrong business!
Thanks to Nagoyankee on JapanForum.com for translation help.