December 4: The Santa Clause (1994)
On Christmas Eve, Scott Calvin (Tim Allen) hears a thud on his roof and finds out the thud was Santa Claus. A startled Santa Claus falls off the roof and disappears but leaves behind instructions that tell Scott to put on the suit in case of an accident. After putting on the suit, Scott starts to become Santa Claus and must embrace his newfound role and find a way to keep it a secret.
Disney+, 1h 38 min