Christmas lights
This is a map of Christmas lights in Dublin, Pleasanton, Livermore and San Ramon. The markers contain an image to the house and a link to LightsOfTheValley. These guys deserve props, they've done a wonderful job of collecting the data.
The icons on the map markers represent the following:
M: Must see house;
D: Description available;
V: Video available;
F: Features FM broadcast;
P: Additional photos available;
W: Website link available;
L: Features Synchronized light show;
A: Audio clips available.