Re: Sad/happy/bittersweet endings
Unlike the "blue sky on Mars" bit, there's no direct evidence to support or dismiss it, which is why I didn't address it. It all depends on if you take Dr. Sweatyhead at his word. It would seem likely to be true, if you buy into it all being a fantasy, which then lends him credence since he's describing outside events, but then at the same time Quaid's wife within the dream immediately reacts to his demise negatively, which points to him being part of the hallucination. But there's no way to prove it, either way.
'First Contact' is the tale of a man who just wants to cash in on his creation so he can get wasted on an island full of naked women, but his fans keep insisting that he's a saintly visionary who has profoundly altered the world. AKA - 'I Don't Want to be a Statue: The Gene Roddenberry Story.'