Sigorney Weavera - my daddy was a big shot President of NBC or some network when I was a little girl.
I said "meh". Neat sets, neat effects. Lousy plot. Typical liberal / conservative stereotypes for characters. There really weren't any original ideas in the whole movie - I found myself saying over and over: "Yep, I saw that when they did it in Aliens/Terminator/Matrix/whatever". I gave it a '5'. Not a complete waste of time, but not amazing, either.
I was glad that Mrs WBill borrowed the DVD from a friend, and I didn't pay $20 in the theater for us to see it on the first go-round.