Alien invasion happens in the 1950s. But this time the invader is an American astronaut. The invaded are little green men with antennas. Teen age romance, government over-reaction, and an attempted cover up ensue. There is also a Martian rover behaving like a dog and a dog behaving like a dog but looking like a refugee from the “Alien” franchise. By the way, buildings and vehicles are all spheres. (The VW bus is a gas.)

It wasn't half as bad as I expected. Planet 51 is directed mainly at children, and the humor is appropriately simplistic, which makes the infinite number of cultural references, of a type that was archaic when Pleasantville used them ten years ago, rather odd, because it seems unlikely that any child would get them, but there are enough laughs to make it enjoyable, even if the admittedly appealing premise runs out of gas after about fifteen minutes. If the movie tried to make a serious point about what makes someone 'alien' or about xenophobia and fear of the unknown, then it failed miserably. But as a piece of straight entertainment for the family, it's a fairly enjoyable piece of film.

The movie kept my son attention for a long time, it was fun to watch with him and my spend some time together .We have friends over and there kids also like the movie so was a hit.

Hi Everything worked out great thanks for being you.

Fun and entertaining. You can watch it over and over and not be bored. Fast moving, and full of laughs for kids and adults.