Other mistake: When James Gandolfini hits Ben Affleck over the head with the shovel for burning something in his front yard, he falls, but his head never hits the ground. You can actually see Ben Affleck holding his head up a few inches off the ground. An impossible feat for someone who is supposed to be unconscious.
Surviving Christmas (2004)
1 other mistake - chronological order
Directed by: Mike Mitchell
Starring: Ben Affleck, Catherine O'Hara, Christina Applegate, James Gandolfini
Visible crew/equipment: During the opening scene, when the camera shot is on a moving train, the camera and cameraman are reflected in the train windows. (00:00:35)
Tom Valco: I think your mom's starting to like your grandfather hitting on her.
Drew Latham: There's a sentence you don't often hear on Christmas Eve.