I've been here at least 8 times and I have never gotten to the entrees because the meze is so delicious, especially the garlicky tzatziki and the Greek sausage. They have a surprising number of good Greek wines which are hard to find in the U.S. The waitstaff adds to the charm of the place- in true Greek fashion they let you linger as long as you would like so you almost forget you are in Manhattan.
Fantastic greek food. Hot appetizers are the only way to go -- just order a bunch and forget the entrees. Delivery is nearly as tasty as eating in the restaurant. These guys really know how to cook.
If you love Greek Salad, Uncle Nicks is the absolute best. Also, the restaurant is well decorated, the waiters are very nice, and all the food is great. Whenever I am in the area I try to go to Uncle Nicks.