Hard to pick

I love the George C Scott version of A Christmas Carol.
White Christmas
Wonder Life
Miracle on 34th Street
Holiday Inn

Plus love the sitcom specials
Andy Griffith Christmas
Mr. Ed Christmas
Bewitched seasons 1 and 4 Christmas (plus her Thanksgiving episode was great)
Dennis the Menace first three seasons
Happy Days Christmas episodes
Dick Van Dyke
Father Knows Best season 1, one of the best Christmas shows
Petticoat Junction season 1
Beverly Hillbillies (several)
Flintstones Christmas from season 5
Honeymooners Christmas
Twilight Zone Christmas with Art Carney

Cartoon/animation specials
Charlie Brown Christmas
Grinch (original)
Frosty the Snowman
Rudolph the Red Nose Reindeer
Flintstones Christmas Carol (really good)
Flintstones family Christmas
Flintstones Christmas
Smurfs Christmas
‘Tis the Season to be Smurfy