I just watched the documentary What Would Jesus Buy? It was pretty much about a man who travels the United States with his followers and preaches to people about the commercialism of Christmas. He ultimately tries to get at the point that Christmas has lost its meaning and commercialism has instead taken over. He tries to instill the ideas of only buying American made products to help prevent slave labor, to only buy what you really need, and to buy from small town stores.
It's actually very comical and has a great message about buying things in general. For instance the movie follows them as they parade around every mega chain store in America while incorporating the phrase, "Stop shopping." into all of their gospel songs. I'd recommend it to anyone who has ever bought anything before.