London at Night
This gorgeous looking map shows how long it takes to get to anywhere in London by night bus.
To find out how long your journey should take just drag the map marker to your location and drag the slider until your destination appears in the lighted area on the map. A word of warning though - the map doesn't seem to take into account the 45 minutes that you will be hanging around at the bus stop waiting for a bus to appear.
The map uses the new Map Styles in v3 of the Google Maps API to really good effect. The map makers say the map was inspired by the long overdue Mapumental map. You can read the full story behind the map on Stefan Wehrmeyer's blog (including a brief review of Mapumental).