Star Trek VI: The Undiscovered Country. This one is intense! Such a good way to close out with the original stars. It seems to have the most traditional blockbuster feel: political intrigue, betrayal, blatant emotionalism, heroes in peril, a mad dash to prevent calamity, last-minute rescues, one-liners and philosophical banter. I think this one also built up the biggest sense of dread and risk out of the series. Also a nice thematic change, rather than exploring the frontiers of space and encounters with strange beings or energy forms or whatever, they’re easing into universal civics, basically, and trying not to let their baggage screw it all up. Same director as the excellent Star Trek II… and I think this one gives it strong competition.