If you can manage to get a reservation, DO NOT PASS THIS PLACE UP. It is the best sushi that I've ever had outside of Japan. In fact, they actually fly the fish in fresh from Japan every single day.
My menu recommendations -- ie get these three things or don't bother going at all -- are the Miso Eggplant, the Yellowtail with Jalapeno and Cilantro in Yuzu Sauce, and the Thinly Sliced White Fish in Ponzu Sauce. Though I have extensive experience with the NOBU menu, in my opinion these three dishes are the most outstanding options on the menu. Now when I go to NOBU, I gorge myself by ordering multiples of just these three dishes.
I also recommend their restaurant beer brand. It's lighter and more crisp than most Japanese beer, and in fact, tastes more like a Chinese beer to me.