Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great concept, weak execution

2.5 starsSuch a good idea, such a lame movie.Starts pretty well and just gets weaker by the minute. Christensen is simply boring (here and everywhere else I've seen him). He thinks looking seriously and quietly at someone is acting. I feel nothing when I watch this clown.Jackson is becoming a reliable sign of a cheesy flick.The effects here are good, but the plot and story are lazy and should be so much more ingenious considering the basic premise. So much to work with and so little accomplished.Not really worth watching.