This is a needless remake that attempts to take the original story and make it into an action movie. The wooden character of Klaatu is fulfilled by Keanu Reeves and Jennifer Connelly is the Patricia Neal role. Only this time she's given an adoptive African-American kid who sort of represents the emotional maturity of the human race.
The "spaceship" lands in New York City's Central Park and the military shoots Klaatu as soon as he comes out. Then Gort reveals himself. Of course, this being a big Hollywood remake, they made Gort four times as large and have him as a CGI effect. In fact, the danger to the Earth comes from him when he disassembles into these micro-machines and starts dissolving civilization. It's like they took the original movie and tried to make it into INDEPENDENCE DAY. And as I watched it I realized that the actor who portrays the kid is Will Smith's (INDEPENDENCE DAY) son, Jaden. Coincidence?
The problem with this remake is that this premise has been used and varied upon so many times since the 1951 movie that it's simply a science-fiction stereotype that no longer holds any interest. No matter how they jazz it up and try to make it visually interesting, the movie is still lackluster. I think the Earth Stood Still because it was bored to death.