There's something immediately striking about Nintendo's Wii U proprietary disc format that's hard to notice in photos -- it's got rounded edges, both outside and in. It feels different than any other disc we've handled before; Tim swears he's seen a round-edged disc in the wild, but we've never seen such a thing ourselves. It's as if the folks at Nintendo took sandpaper to every edge of every disc, making them all the more friendly to the touch. It's a little detail, but it's a nice one. As we learned when the console was initially announced, the Wii U's "proprietary high-density opt