If you're not watching a movie this festive period that specifically has the word 'Christmas' in its title, you'll likely be debating with family members over whether it's a Christmas movie, or simply a movie with Christmas in it.
There's definitely a difference between the two. It's why Die Hard, Gremlins and Home Alone are could fall into either category, depending on your point of view – and this year we can add Song Sung Blue to the list.
