No. 9: Sushi
Sushi lovers have united, just as the bumper stickers urged. As a result, sushi has made a big splash in America during the past decade. The growing popularity is also spawning new concepts such as customizable sushi. Fast casual newcomers such as Texas-based How Do You Roll? and New York's My Maki allow customers to pick ingredients as they move through a queue, much like Subway and Chipotle.