No, not that 1951 chestnut, but the 2008 chestnut. "Klaatu barada nikto" indeed.
Like the original, feature a large robot like creature which can shoot beams from its one eye slit. It features a human looking alien. It features a woman who comes to trust him and a military which doesn't. The plot is similar. It's very much like the original but its very different as well. We like it. We're not sure we liked the ending but at least the ending followed from the plot. I don't think we'll be seeing The Day After the World Stood Still. I recommend it. Keanu Reeves plays the alien, Klaatu. He is at his most Keanuish in this movie so if you don't like Reeves you may not like the movie.
Before the movie we saw a "First Look" at The Watchmen which is due out in March 2009. We saw an abbreviated trailer for this a few months ago which prompted me to read the graphic novel. I loved the novel and the movie looks like it's going to be pretty faithful to the novel.