Written by David Scarpa and directed by Scott Derrickson, the 2008 version of The Day the Earth Stood Still stars the appropriately expressionless Keanu Reeves as an alien (apparently, god created other beings in its image elsewhere) who arrives on Earth to teach love to Jennifer Connelly and peace to the blood-thirsty human race.
Since idiotic humans didn't learn anything from the excellent 1951 movie written by Edmund H. North, directed by Robert Wise, and starring Michael Rennie and Patricia Neal, I'm not sure why said alien would bother with us again. Surely there are other planets out there with more enlightened inhabitants who would be more open to his message.
Also in the Day the Earth Stood Still cast: Jon Hamm, John Cleese, Kathy Bates, Jaden Smith, and Aaron Douglas. Now, it's really unfortunate that Patricia Neal didn't land a cameo in the film.
The Day the Earth Stood Still opens in the US on December 12. It'll also open in much of Europe around that date.
Trailer posted by DmtShaman.