I do have to say some people go a bit overboard on the decoration of their houses. They will start in November to completely transform the front yard and house into some sort of wonderland. I do, however, like when they take the time to synchronize the whole thing to music. I have even seen where two neighbors got together and coordinated their displays to be synchronized together.
The only drawback to that is you suddenly have a traffic jam in your neighborhood, which I am sure does not endear them to their other neighbors.