4food (CLOSED)

Fast food goes high-tech at this midtown joint, where diners can order their customizable burgers via iPad and a massive "media wall" streams Twitter and Foursquare check-ins. Start with a doughnut-shaped patty in your protein of choice (beef, veggie, salmon, egg) and fill in the center with items like mac and cheese or potato-chorizo hash. Name your creation and get a 25¢ credit every time someone else orders it.