9. Trading Places (1983)
Trading Places is one of those movies just about everyone has seen at one time in their lives and there's a good reason for that: it's a great movie! Critics and fans agree on this one, which is why the movie airs on television every year... usually around Christmas-time.
While the movie was released in June, it qualifies as a Christmas movie due to the events that took place during the second half of the movie. After Dan Aykroyd's Louis Winthorpe III loses everything he had to Eddie Murphy's Billy Ray Valentine, he falls into a deep state of depression.
This climaxes with him dressing as Santa and crashing a Christmas party held at his former place of employment. The movie continues into a New Year's celebration, but much of the third act took place during Christmas, which offered a sort of redemption for all the characters moving forward.
It's hard to watch this movie and not get a Christmasy feel given the themes and situations that play out, which is why it tends to air every year during the season.