Only one thing I can say:
It's okay to watch it once in the cinemas/theaters.........but never pay to see it again.
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It's just an okay film...........but it's not something that you'd want to spend money for after watching it once. Heck, you should not even buy it on Blu-ray at all.
Just rent or borrow a copy if someone you know has it by then.
Babylon A.D. 
