I heard this on CNN yesterday. They modeled the interior like a feudal era Japanese castle (hopefully with no traps). Apparently ninja's serve you the food. If they are really stealthy how can you call them over for a refill or the bill?

www.ninjanewyork.com/index.html

When you walk in you have to choose The Easy Path or The Hard Path to your table... Go the hard way...

I hear that if you really don’t like the food the chef will resort to seppuku…

Frank Bruni of the NY Times is apparently not a Ninja fan, though he acknowledges the restaurant's decoration budget.
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Yelping Warriors, and Rocks in the Broth
By FRANK BRUNI
CONFUSING the point of a restaurant with the mission of a "Saturday Night Live" skit, Ninja New York deposits you in a kooky, dreary subterranean labyrinth that seems better suited to coal mining than to supping. You are greeted there by servers in black costumes who ceaselessly bow, regularly yelp and ever so occasionally tumble, and you are asked to choose between two routes to your table.

The first is described by a ninja escort as simple and direct. The second is "dark, dangerous and narrow," involving a long tunnel and a drawbridge that descends only when your escort intones a special command, which he later implores you to keep secret.

I recommend a third path: right back out the door. Granted, you will be denied the sating of any curiosity about what a $3.5 million design budget permits in the way of faux stone walls, make-believe gorges and mock torches. You will forgo an iota of modest amusement....

I think Patolino went here for his birthday a year or two ago.