In the annual Doctor Who holiday special (7 and 10 p.m., BBC America), the Doctor makes sacrifices to save a town called Christmas.
Elsewhere on TV ...
The Muppet Christmas Carol (9 a.m. and noon, ABC Family): Kermit, Miss Piggy and more. (Repeat)
NBA: Chicago Bulls at Brooklyn Nets (10 a.m., ESPN); Oklahoma City Thunder at New York Knicks (12:30 p.m., ABC/Ch. 4); Miami Heat at Los Angeles Lakers (3 p.m., ABC/Ch. 4); Houston Rockets at San Antonio Spurs (6 p.m. ESPN); Los Angeles Clippers at Golden State Warriors (8:30 p.m., ESPN)
National Lampoon's Christmas Vacation (2 and 10 p.m., ABC Family): 1989 comedy. (Repeat)<