4. Jack Frost
One is a heart-breaking kids film about coping with the death of a loved one, and the unlikely return of Michael Keaton's father from the dead in the form of a snowman, and the other is a definitively adult film about the death of a serial killer, and his unlikely return from the dead in the form of a snowman. Fairly similar and devastatingly easy to mix-up, especially if you have kids who like a festive movie with a heart-warming and emotionally gripping storyline. Released just two years apart to compound the confusion, both films take similarly silly premises, with the first the horror, released in 1996 slathering lashings of fake blood onto the animated snowman, while the latter family film goes for the heart in a different way entirely. Both are good watches, depending on what you're looking for, but mixing the pair up is a quick recipe for Christmas time trauma.
Handy Watching Tip If your children are crying uncontrollably, and subsequently don't sleep a wink throughout the winter months, you've probably rented the wrong film. Though, to be fair, the Michael Keaton version does rather explicitly explore issues of mortality that are probably too advanced for the target audience anyway.