Saw it last weekend
Great effects, good acting, and a somewhat narrow story. Basically no more than two actors with one goal. But there were some goodies included. (For one, listen carefully to the ground controller.)
There was one glaring "Roadrunner physics" occurrence that all here should pick up on and at least one or two highly improbable maneuvers.
Definitely worth a matinee. I might go back and see it in 3D.