The following are some useful sites when it comes to dining in New York (and in general). If you have any good ones to share or have your own personal blog about food, restaurants, etc., do share!

New York Dining
Cravings - gorgeous blog by Celia Cheng about wonderful dishes at NYC restaurants
Eater - great restaurant blog about openings and closings
Midtown Lunch - excellent source for finding interesting lunch in Midtown Manhattan
New York Times Dining & Wine - key source for reviews and slideshows
New York Restaurants and Food - comprehensive restaurant resource by New York Magazine (now includes their food blog Grub Street)
NYC Wine Bars - map of good wine bars in NYC
Restaurant Girl - freelance writer for Time Out Magazine with a charming NY food blog
New York On Tap - a great way to find bars in the city using Google maps; useful reviews as well
Korean Cooking - this popular Korean recipe blog also features entries about cool eating spots (mostly Asian) in New York

Helpful Food Guides
Chowhound - got a question about restaurants? tap this helpful social network of foodies.
Menupages - check the restaurant menus before you go

Wines
eGullet Society: Evaluating Wine - learn the basics about wine
Cork’d - find reviews of all kinds of wine and add your own ratings to this user-powered database
Wine Library TV - great weekday online video show about wines (host is a bit annoying, but he grows on you)

Yummy
Delicious Days - a couple from Munich runs one of the most delightful food blogs on the net; wonder photography
TasteSpotting - the makers of NotCot.org bring you a user-driven food photo/link gallery