Do you still have a couple of Christmas gifts to buy and not a lot of money to spend? Well, good news! Christmas movies are not only thematically appropriate in most cases, they're also a relatively cheap way to say, "I love you." Sometimes they also say, "I hate you, but I'm pretending to love you for the holidays." But which movie to choose to send just the right message to the recipient? Consult the following pitiless Christmas movie-buying guide for handy tips.