Star Trek VI: The Undiscovered Country

In 2293, the explosion of the moon Praxis pushes the Klingon Empire to the brink, and Chancellor Gorkon offers peace. Kirk, who never forgave his son's death, is ordered to escort him. The Enterprise appears to fire on Gorkon's ship, and two assassins kill the chancellor. Kirk and McCoy are sentenced to life on the frozen planet Rura Penthe and escape with Spock's help. The investigation uncovers a conspiracy of Klingons, Romulans and Starfleet officers against peace, with Spock's protégé, the Vulcan Valeris, among them. At the Khitomer conference, the Enterprise and Sulu's Excelsior destroy General Chang's cloaked Bird-of-Prey. Ordered home to be decommissioned, Kirk and the crew take one last trip.

• After the credits Not a scene: during the credits, the main cast's names appear as the actors' own signatures, a farewell from the original crew. There's nothing after that.

1. CameoChristian Slater on the Excelsior

   The officer who wakes Sulu aboard the Excelsior is Christian Slater. The film's casting director was his mother, Mary Jo Slater.

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2. CameoA Worf in the courtroom

   The Klingon lawyer defending Kirk and McCoy is Colonel Worf, played by Michael Dorn. The film never says so, but he was meant as the grandfather and namesake of The Next Generation's Worf.

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3. Behind the scenesAn intergalactic Chernobyl

   Nimoy pitched it: what if the Wall came down in space? Nicholas Meyer answered with an "intergalactic Chernobyl", which became the explosion of the moon Praxis.

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