Andrew and I watched this the other night. It doesn't come into theatres until April 24th. Overall, if you like Sci-Fi/Fantasy/Comic type movies, you might like this one.
After The Ice Age, "something" dropped from space onto the Earth. It created a "machine" that was set to transform humans into mutants. The machine was defeated in the middle ages, and a seal was placed over the opening in the Earth.
Fast forward to 2707. The world is now controlled by four corporations (not countries). We have almost depleted our resources. Two corporations are fighting in trench warfare using technology and tactics similar to WWI (with some minor additions ;) ). The seal is broken during the war, and the machine starts up again (I don't know where the mutants came from that broke out of the seal though - they stayed down there that long??)
A holy man enlists the assistance of others for a suicide mission to destroy the machine.
I won't go into any more details, but it's an okay movie. I wouldn't spent $10/ea to go see it in theatres. If you have XBox Live, you can download it :)