As a plot I thought this movie had a lot of potential.

I was disappointed however. After 25 minutes I just found it boring. The acting is terrible and you can hardly hear what Matthew McConaughy is saying. He just seems to be mumbling all the time. Also there is very little or no humour, most of the characters seem to argue with each other and the only interesting line was something to do with one hour being equal to 7 earth years, "so let's make every bit of it count." I ejected the DVD before half an hour was up....but maybe I'll return to it at some point. I am just glad I never went to see it at the cinema.