I was trying to decide on a rental and after describing what I needed as " a big budget sci-fi action flick with impressive special effects, good 5.1 sound & nothing that will require much brain power', this was recommended. I'm happy to say that it filled all of those requirements admirably.The set-up is nicely done and engaging. The story has some humor & romance, but nothing too corny. There are some science ethics issues raised, but nothing too heavy or complicated. Once the action gets underway, it is a thrilling rollercoaster ride involving flawless special effects without obvious, overbearing cg. The story's resolution is about as satisfying as you could expect from a hollywood picture.Despite being dirivative ( Brave New World, Clonus, Logan's Run ) it still manages to be good edge-of-your-seat entertainment... car crashes and explosions be damned!