i'm a sucker for synchronized Christmas lights and music displays. And envious of the people with the ability to do the painstaking design, programming and setup.
The program for this house in Trinadad is fourteen minutes long. But it is worth it because of it's playful use of a mix of not only Christmas carols, but also contemporary and world music as well as the inclusion of cultural references.
But here's another good one, much shorter: http://youtu.be/PcddtJoxK-s
and in this one, only 90 seconds long, an entire neighborhood plays the game: http://youtu.be/4fkP82I3F0w