Yes! Milos on 55th Street between 6th and 7th ave (right near the entrance to City Center). It's a Greek Fish restaurant and I think they fly in the fish everyday from Greece. Incredible food. They have a wonderful pre/post-theater menu if I remember correctly. It's probably quite expensive (I've only eaten there when my parents are paying) but it's delicious. If you're looking for something quick, I really like The Burger Joint in le Parker Meridien which is on 56th Street b/t 6th and 7th. It's nothing fancy, but they have good burgers for a quick bite.
Its fun because it is in such a nice hotel and feels like you found a secret restaurant. It is good if you are hungry and need a something slightly above fast food. The burgers are decent, but I will take shake shack over these any day. Also, Cash only.
I like Red Eye Grill on Seventh Avenue between 56th and 57th Street Food is good and you can keep the bill down if you dont have dessert and limit drinks Check out the menu on line