The Darkest Hour is is an upcoming sci-fi movie about a race of evil, sexy super-women from another planet who come to take over the Earth ... sorry, just kidding.

Looks kind of interesting, though.
The Darkest Hour is an upcoming 3D science-fiction film directed by Chris Gorak and produced by Timur Bekmambetov (
Wanted). The American-based production depicts an alien invasion in Russia and stars Olivia Thirlby and Emile Hirsch as young people caught in the invasion. The film has a release date scheduled for December 23, 2011 in the United States and Russia.
The Darkest Hour IMDb entry