It was incredible, and I read, somewhere, that the actors were already preparing for a sequel.
The only thing that bothered me was the fact that the solution presented seemed way too simple and unrealistic. Also, how the hell did they manage to enslave a race of aliens with technology that, in the hands of one alien and one human/alien could bring down an entire company with?? Not to mention the aliens' super strength that was rarely used. It seemed like it had a few holes. Also, why couldn't they just beam up the control portion of the ship before, instead of waiting twenty years?