Although not something you’d expect from a Xmas movie, Gremlins is the perfect mix of comedy and horror. When Billy is given the adorable Gizmo for Christmas, he warned three things. Under no circumstances should he feed Gizmo after midnight, get him wet, or expose him to bright lights. He, of course, does all three, and Gizmo transforms into a nasty, green gremlin. This is a classic premise that could only have come from the ’80s.