Denzel Washington is off to save the world from eternal damnation in this trailer for the upcoming movie The Book of Eli. Taking place in a post-apocalyptic world, The Book of Eli follows Washington as Eli, the lone man fighting his way across the country in search of a sacred book thought to have the answers to preserving mankind. The Book of Eli comes to theaters January 15, 2010. Check out the trailer below. And click here to see an exclusive clip from the movie taken from Washington's USA Weekend cover story on stands January 8, 2010.