9 tonight, HBO
No wonder ballet movies tend to be dark. In a week dominated by Christmas programming, we get this sugarplum-fairy-free documentary, which looks at Russia's celebrated ballet in the wake of an acid attack on ballet director Sergei Filin. Prima ballerina Maria Alexandrova (pictured) is just one of the dancers whose workplace is apparently not as beautiful as the audience might imagine, although you'd have to read between the subtitles to know for sure what's going on.
THE I LOVE LUCY CHRISTMAS SPECIAL
8 p.m. Wednesday, CBS3
The Christmas and famous "Vitameatavegamin" episodes have been colorized and combined.
MYTHBUSTERS HOLIDAY MEGA MARATHON
Midnight Wednesday, Science Channel
Before it begins its final season next month, the "MythBusters" team plans to go out with "248 episodes, 2,950 experiments, 1,050 myths, and 900 explosions" in a marathon running, in chronological order, through Jan. 3.
9 p.m. Friday, BBC America