Churrascaria Plataforma [316 West 49th Street, New York; Menu]
It's a massive Brazilian smorgasbord. It's a gimmick, but a gimmick that generally works. A little pricey ($56 for dinner), but you will definitely leave stuffed. Salad bar is enormous and varied, but don't fill up there. Wait for the meat to come around on skewers. Beef ribs are fantastic, as are the high-end cuts of beef like Top Sirloin. Avoid too much flank steak.