The best item to order isn't even on the menu: the tasting menu.  I didn't know about this secret the first time I ate there and had wound up ordering the sea bass, which I found to be overly hyped.  The tasting menu consists of a multi-course meal of items selected by the chef depending on your food preferences and your price point ($60-$120 per person).  If you're in town for a short time and don't see yourself visiting again any time soon, the tasting menu is what to request!