Star Trek IV: The Voyage Home (1986)
I don’t know why but this has always been my favorite Trek film and remains so.
Star Trek IV: The Final Frontier (1989)
What the hell was that?
Star Trek IV: The Undiscovered Country (1991)
A perfect send-off for the crew of the USS Enterprise.
II, IV, and VI would make a perfect trilogy if III wasn’t so important to the plot.