httpvhd://www.youtube.com/watch?v=VAKhftX0cjk
This isn’t exactly going to replace your HDTV or iPad, but check this out: a 1920 x 960 display made up of 12 daisy-chained iPod Touches, with a thirteenth iPod Touch as a remote. Just imagine how many pixels this would be pushing spread across 12 Retina Displays.