A man's day-to-day is organized by two simple yet ineluctable forces: the subway, which determines your traveling, and food, which is delicious, and keeps you from dying. Align your wanderings with your chow with Taste of the Subway.
Still in beta, TOTS lists all restaurants within 200meters of any NYC subway stop, a swathe broad enough for variety, but narrow enough that you'll reach your eatery/sanctuary before irate Andean pan flautists catch you and flaut you for refusing to tip. Simply click along TOTS' subway map, or browse stops on the comprehensive list of lines -- from the West Side's 1 to the mysterious Z Train, whose terminus is a deadly den of C.H.U.D.(s?). Every class of eatery is included, from high-end spots like Le Bernardin, to standbys like Houston's, to Taco Express Incorporated (which was much better before they took corporate funding). To help you decide among limitless choices, each spot's linked to a Yahoo! Local review, where intrepid diners offer helpful comments ("the decor ain't great, but hey, it's a deli"), and even more helpful comments ("hair in burger").
Once they've ironed out some bugs, TOTS plans to increase their number of restaurants, and plot them using the third inevitability of your existence: Google Maps mashups.
Taste the subway here