Just got an e-card from our friends in TV with a link to an amazing display.
One of us thinks that while it might be ba real house, the choreography and light/music sequencing and synch might be done digitally for the video
In any case, it is amazing, and there are many more 'related' on the 'net.
L and L
http://www.flixxy.com/best-christmas-lights-display.htm