I thought the concept was exciting. The commercial promised some different visual effects which I was a little disappointed at what the movie actually had to offer, I was hoping this was going to be in 3D too. Then it would have been better. It was difficult to follow at times and a little long. I'm not the type to complain about complexity of story line or long running times, so I guess this just didn't keep my interest very well. Sometimes I felt like screaming, "What? Why?" The ending left me unsatisfied, and after 2 and 1/2 hours long I deserved satisfaction. It tried to be a great film and ended up being okay. I was just glad to get out of the house. Oh, and I like watching Leo, he never disappoints. One more thing, IMAX is too loud!