I wouldn't have liked it had it not been Ethan Hawke. He has this un-explainable sadness in him; remember the other movie he was in with Gwyneth Paltrow where he loved her for his entire life, and another sic-fi movie with Uma Thurman where he was an inferior human being.
I don't mean to sound so gay. Ethan was in his best in "Training Day."
Anyway, the movie was very short, about one hour long. They talked from the begining to end. Overall, it was good.