I forgot one:
The Year Without A Santa Claus, which Im watching right now *sings along with Heat and Cold miser*
But what's really..eh I dunno...odd...they made a SEQUEL!! Apperantly WB got the rights to all the old Rankin Bass stuff and decided that Heat and Cold Miser needed their own film.

It's called The Miser Brothers Christmas. Mickey Rooney even reprises his role as Santa from the 1974 film. That premiers tonight on ABC family (and no doubt repeated a gazillion times). It'll definatly be interesting (the trailers look like they repeat the Heat/Cold Miser song from Year Without A Santa Claus).
Edit:
After watching Miser Brother's christmas....well...it's interesting.
It's not the best animated film but it'll definatly become a fan favorite. The baby raindeer are absolutly adorable and seeing Snow and Heat as children was interesting as well..