Here's a list of my favourite Christmas specials:
1) "The California Raisins Christmas Special"
2) "How The Grinch Stole Christmas"
3) "Emmett Otter's Jug-Band Christmas"
4) "Rudolph The Red-Nosed Reindeer"
5) "A Charlie Brown Christmas"
6) "The Garfield Christmas Special"
7) "A Miracle On 34th Street"
8) a "South Park" episode called "Mr. Hankey's Christmas Classics"
9) "Santa Claus Is Coming To Town"
10) "A Muppet Family Christmas"