The Reuben at Greenburg's Deli in NYNY is always on my must-have list. Pretty much anything at Block 16, China Poblano (Mexican-Chinese cuisine), and Momofuku in The Cosmopolitan. If you like tasting menus, Partage is excellent. And if you like tiki bars, Frankie's (classic, divey) and Golden Tiki (next to Partage) are both great experiences.