Money-and-power-sucking New York Magazine has every listing you'll ever need.
However, if you are even hipper than that, try The L Magazine.
Or, if you're serious about art, Time Out New York still has superior gallery and museum listings (print only).
Visit the Yelp website or even better download the app for the best crowdsourced reviews and location-finder services.
Cool kid Blackbook has a trendy app guide to NYC.
The L Magazine runs a hip who's-who of live-music gigs