Common Sense Note
Parents need to know that this Star Trek movie is the most farcical of the big-screen series. As much comedy as adventure derives from the journey of the Starfleet heroes to 1986 Earth, and the relative rudeness and local color they encounter in San Francisco. There are instances of comical swearing and drug references.
A brief flashback to a spaceship explosion from Star Trek III, but otherwise this is renowned as the Star Trek movie without a single shot fired in anger. One character does suffer a fall, and disastrous storms batter the Earth. Some stock footage of the killing and butchery of whales.
Mr. Spock tries to fit into 20th-century culture by swearing gratuitously ("colorful metaphors," he calls it), played as comedy. Words used include "Goddamn," "hell," "dumbass," and "dips--t." A punk gives Kirk and Spock the finger.
Starfleet is racially and species-integrated, individually quirky but respectful and appreciative of differences. They function as a great team, working together for positive outcomes. Kirk asks Spock to lie -- which Vulcans can't do, but he's able to "exaggerate" deceptively. Female characters, often on the sidelines or simply love interests, are particularly strong in this mission.
Apple computers get a plug, as well as the Yellow Pages and other 20th-century billboards. Star Trek itself is quite a commodity.
Drugs / Tobacco /
Social drinking. Kirk explains Spock's alien ways to a 20th-century heroine by saying he did heavy drugs in the 1960s.