Yuka [1557 Second Ave. (bet. 80th and 81st Sts.) 212-772-9675]
An all-you-can-eat paradise and long-time favorite among me and my friends. For just $18.00, you can stuff yourself with tuna, salmon, and other favorites until you have gills. Unlike most places with this same deal, the fish is pretty high quality. For those without such a large appetite, most other food is fairly inexpensive as well. And portions tend to be huge.