Podbop is an awesome site that just launched. Enter in your city, and get back a list of bands playing in the next week and MP3s to listen to. Discover a band you like, then go see them. Podbop even links each listing to show details and a page to buy tickets.
This is what the so-called "Web 2.0" is all about. Taking data and bundling it together into an intuitive package that creates new connections. Cool stuff.