Music:
Carols (preferably drunken)
Movies:
Anything with Tim Allen/Ed Asner/Martin Short/Dudley Moore
Television:
Christmas telemovies, Sitcom Christmas Specials, Summer reruns, Rankin Bass.
Books:
The chrissie bit in the bible. The chrissie bit in Harry Potter. Dickens
Heroes:
The Ghost of Christmas Past. The Ghost of Christmas Present. The Ghost of Christmas Back to the Future. Wencelas.