If you like Yelp, but you're after much more granular information on food and drink, then Spork is just what what you need to fulfill your craving. This iPhone app (and its companion Web site) lets you simply enter a food or drink item and then populates a list of options nearby, many of them with ratings and comments by other Spork users to help you determine which restaurant has the best al pastor taco or cupcake (for example). You can also rate and recommend dishes yourself as well as add them to a "to do" list, which you tick off as you ingest.
As of this writing, the app is in beta, so it still needs a bit of polishing. Still, Spork is extremely user-friendly with a nice interface that's heavy on images of yummy-looking food and nice graphics to call out ratings. You also have the option to connect to fellow users to get more-personalized recommendations, and suggest particular items to friends. Even in beta, this is a must-have app for any foodie.