Star Trek IV: The Voyage Home

Spock determines that the probe is sending out signals to another intelligent terrestrial life form, humpbacked whales, which no longer exist. Using the gravity slingshot time-warp effect (established early in the original series) to travel back into Earth's 20th century, Kirk and company land in 1980s San Francisco to try and bring humpbacked whales to the 23rd century, to respond to the probe. Thus starts a surprisingly breezy, light-hearted, yet serious odyssey through the past (comparable to the best work of the original series), as the crew learns to deal with exact-change buses, angry drivers, punk-rock enthusiasts and other elements of '80s life, and Kirk tries to persuade a scientist (Catherine Hicks) of his good intentions for two whales in captivity. The screenplay, co-authored by Steve Meerson, Peter Krikes, Nicholas Meyer, and Harve Bennett (from a story by Nimoy and Bennett), is the cleverest and most sophisticated of all the Star Trek movie screenplays, recalling some of the elements of Meyer's earlier time-travel movie Time After Time and also anticipating the feel and tone of the series Star Trek: The Next Generation (which would be on the air not quite a year later). Nimoy's direction offers a combination of brisk pacing and a deep love of the characters and the actors, as well as a serious appreciation of the humorous aspects of the script, and Shatner gives his best performance of any of the movies. ~ Bruce Eder, All Movie Guide