Excellent first 100 minutes - the ending was terrible. Very professionally done, high-quality, entertaining and fun movie. Definitely needs to be seen on the big screen. Special effects were excellent and the sound was amazing. I think it is only a one-timer in the current theater version. I really enjoyed the first 100 minutes so much, really well done. The ending was Terrible, a total letdown. It reminded me of the first time I saw "2001: A Space Odyssey". I hope so much the studio will release an extended DVD version with at least 10 additional minutes explaining the ending a lot better. It would also be nice if they could better explain why the aliens are here at all. It seems like it was a complete waste of the aliens time and effort trying to communicate with the cave-man like human race - compared to their obvious technology.