I thought this movie was good, definitely worth seeing in 3D, particularly at an IMAX. I'm not a huge SciFi follower, but I enjoy the genre. I liked the story line and I think the time although lengthy, was fine. I don't think this is on par with previous SciFi blockbusters such as the Star Wars or Lord of the Rings movies. It's definitely worth seeing, but it can be a little "preachy" feeling and although I may agree with the sentiment, when I pay for entertainment, I'm not usually wanting it to be part of the movie. Sam Worthington did a good job.