Ok, Christmas is over but maybe one of your friends has his/her birthday, or, you just want to get this for yourself. QR Codes might be all the rage (or not) for advertising and marketing in your country but here is something special for geeks: the QR Code Space Invaders t-shirt, available at threadless.
What is a QR Code? (Wikipedia)
A QR code (abbreviated from Quick Response code) is a type of matrix barcode (or two-dimensional code) first designed for the automotive industry. More recently, the system has become popular outside of the industry due to its fast readability and comparatively large storage capacity. The code consists of black modules arranged in a square pattern on a white background.