This is the coolest restaurant. It's called Wiki Wiki Teriyaki, and it's in Austin, a few blocks from the convention center.
Rather than having a set menu, they just have a bunch of ingredients and invite you to bring your own. The diners, who call themselves "recipedians," get to put together their own recipes and have them cooked. Other diners can then build on each other's recipes and discuss them, creating a seemingly limitless array of recipes. Soon they'll add ratings and tags to make it easier for diners to parse their options.