Star Trek IV: The Voyage Home (1986)
Fantastically better than I expected in every way. There's so much of what Star Trek is best at in this film, like calling attention to the very current social/ecological concerns of 1986, a hand-waving time travel story, the ensemble cast working together to fight injustice rather than some capital-V Villain, and even Spock reacclimating to his own life and therefore rather starting over as a, uh, foil? to humanity? kinda?? The production budget was clearly WELL-FUNDED, and put to great use, the locations are amazing, the shots are terrific, and the ordinary 1986 San Franciscans are just so believable.
I'm currently watching through all the Star Trek TOS movies and just having a ball. I have just loved the others but this one has really surpassed my expectations and delighted me so much. It is just endlessly funny, and I feel like these characters and actors have really been given the chance to shine and do what they do best. Loved this!