I am just a sucker for sci-fi's, especially with Keanu Reeves! Sad that Klaato had to leave though...

Something like this would happen in real life. Humanity is seriously overconfident in our military power, technology, way of life and we usually think we're special, and we can do anything we want, we're better than anyone/anything else. We are nothing like that. As the movie says, Earth is not OURS. Regarding roles... Keanu, Connelly, Cleese, Bates, Jaden (...) are all perfect, believable. Jaden's character was annoying, but had to be. A+Watch the movie.

If Klatu and his robot had come to Earth to kill Jaden Smith, i would have given this Movie 10 stars. I'll be Frank. this kid ruined the movie for me. The 1951 version is still my favorite. 2008 version has some good effects, But changing the storyline is stupid. Casting is atrocious. And I'll say it again Jaden Smith killed the Movie for me.

This The Day The Earth Stood Still 2008 was not a Remake of the Classic The Day The Earth Stood Still 1951.The Day The Earth Stood Still 1951. The Primary Goal of Klaatu was for Earth to keep their Destructive Nature (Petty squabbles) limited only to Earth or be Destroyed as a threat to the rest of the Planets (Galaxies).The Day The Earth Stood Still 2008. The Primary Goal of Klaatu was to warn Humans to stop Destroying Earth. The idea that Earth like Planets were very limited according to this version of Klaatu, as "Advanced Tech" Klaatu not knowing about the science of "Terraforming" other Planets.The idea of Gort (a name, World Policeman, 1951) becoming G.O.R.T. an acronym as named by the Humans (not Klaatu) as the very Destroyer of Worlds by becoming nanobots (destroying everything except the limited saved by the alien spheres) is quite Counterproductive to the stated primary goal of Klaatu of The Day The Earth Stood Still 2008, destroy Humanity to Save Earth, as the released nanobots destroyed everything, plants, trees, animals, metal, concrete, and anything not in the alien spheres. How long would Klaatu take to recreate the food supplies, food sources, food chain for all the species saved in the alien spheres (arks). Killing off one kind of plant, grass, could result in the extinction of an entire species and the other species that feed on the other species that eat those plants, grasses, seeds that were permanently destroyed by G.O.R.T.'s nanobots.