Bill is a genius and I love this map.
Bill's Map is a Google Map of upcoming gigs in Austin, Texas. It is possible to search the map for upcoming shows by using the date slide-bar at the top of the map. You can then choose to view just the recommended gigs or all gigs on the map.
The genius idea is that when you click on a marker for a gig you can view a YouTube video of the band (where available). This means that you are able to search the map for gigs and get a quick preview of the bands or artists to help you decide where you want to go.