One of my favorite Christmas Eve traditions is to drive around with some good Christmas music on (good meaning anything not by Kenny G) and looking at the various exterior decorations from the good to the bad (anything involving anything inflatable).
I have to admit I'm impressed by those people who not only illuminate their homes but also take that next step and coreograph that light show to music. There's even a home here in middle Tennessee that does that, as sampled above. The house is in Murfreesboro on Hamilton Drive, if you're interested in seeing it for yourself. I may have to try and find it tonight or in the next few days.