New last week (12/29/11):

Apollo 18
Decades-old found footage from NASA's abandoned Apollo 18 mission, where two American astronauts were sent on a secret expedition, reveals the reason the U.S. has never returned to the moon.

Luther Season 2
John Luther, the near-genius detective struggling with his own demons, returns with two distinctive, thrilling crime stories. Devastated by the brutal murder of his wife, John Luther returns to policing in a different world. His old unit has gone and he's working in the newly created Serious and Serial unit, headed by former police complaints officer Martin Schenk. Luther quickly gathers together his team, rescuing his old partner Detective Justin Ripley from uniform.

Ancient Marvels
This PBS Explorer Collection includes: Ghosts of Machu Picchu (NOVA); Riddles of the Sphinx (NOVA); Secrets of Stonehenge (NOVA); Secrets of the Parthenon (NOVA); and Easter Island/ China Bridge (NOVA)