Oxygen is a decent movie. But once I saw intro and saw that it was 1 hour 43 minutes, I wondered, is this going to be 1:43 of her in the box?? Which I didn't think I could tolerate... so I watched for a while, to see where it was going, then fast-forwarded through about 2/3rds of it, stopping periodically to see where the plot was going, then watched the last 20 minutes or so to find out what happened. The ending was interesting but not really satisfying.