With increased competition, chefs are finding that "concept" dining is yet another way to spice things up (pun intended). These 10 restaurants are taking that lesson to heart with some truly unusual fare. Fat Duck Bray, England www.fatduck.co.uk The current tasting menu at Heston Blumenthal's Fat Duck includes nitro-green tea and lime mousse (shown here) as well as snail porridge, salmon poached with licorice and mango and Douglas fir puree. Blumenthal's latest book, In Search of Perfection, inspired a television series of the same name currently airing on Britain's BBC 2. Ninja New York www.ninjanewyork.com While patrons work their way through the tasting menu at this Japanese restaurant, servers dressed as ninjas perform magic alongside their tables. Expect to spend quite a bit on the sushi--but realize you're really paying for the entertainment. Dans Le Noir (In the Dark) Paris London Moscow www.danslenoir.com/ Dans Le Noir founders Edouard de Broglie and Etienne Boisrond believe that the act of consuming food becomes more satisfying when you're relying on senses other than sight, and they hired a primarily blind and visually-impaired staff to prove their point. Does the food at Dans Le Noir really taste all the better for it? Book a table at one of their three locations--Paris, London or Moscow--to find out. WD-50 New York www.wd-50.com Chef Wylie Dufresne cut his teeth at Jean Georges as sous chef and then at Prime in The Bellagio, Las Vegas, as chef de cuisine before opening WD-50 in New York City's Lower East Side. His dishes, such as butternut squash sorbet with coffee soil and basil (shown here), are adventurous. And at $105, the nine-course tasting menu is one of the most reasonably priced in the city. El Bulli Costa Brava, Spain www.elbulli.com El Bulli's head chef Ferran Adri Acosta is a scientist with the passion of an artisan. That's why Adri closes for six months every year to dream up all sorts of new and nearly unbelievable dishes (such as the artful beet-based sorbet shown here) in his "El Taller" laboratory. El Bulli's dynamic menu earned it the title of 2006's Number One Restaurant in the World, according to Restaurant magazine.