Mark Lenard

Watch 'Star Trek VI: The Undiscovered Country' on HBO on xfinityTV.com

Watch 'Star Trek--The Motion Picture' on HBO on xfinityTV.com

Admiral Kirk leads the crew of the U.S.S. Enterprise to find the force responsible for the destruction of Federation starships.

The crew of the Starship Enterprise travels back in time to 20th-century San Francisco, where two humpback whales hold the key to Earth's future survival. Funniest installment of the series!

Adm. Kirk hijacks the Enterprise to rescue Mr. Spock, whose spirit remains alive on the rapidly degenerating Genesis planet.

Hang 'Em High starring Clint Eastwood, Ed Begley, Inger Stevens

Shortly after the events of Star Trek II: The Wrath of Khan, the USS Enterprise carrying the combined crews of both Enterprise and USS Reliant, limps back to Earth, scarred from its battle with Khan. Once there, Admiral James T. Kirk is informed that the obsolete vessel's days are over (it is stated to be 20 years old, but official production timelines place it as about 40 years old, with Kirk's command of the Enterprise being about 20 years); it won't be refitted, but will instead be retired, and its crew reassigned. Meanwhile, Dr. Leonard McCoy exhibits strange behavior, somehow related to the deceased Captain Spock. He even seems to be channeling both Spock's behavior and voice. Simultaneously, Kirk's son Dr. David Marcus and Lieutenant Saavik are now on board the research vessel USS Grissom to explore the Genesis Planet, created at the end of the last film. The two transport down to the planet's surface to explore its terraforming progress. While there, they discover, much to their shock, that Spock's body has been resurrected by the Genesis effect, although his mind is no longer present and he operates on a purely child-like level. Marcus, pressed by Saavik, admits that he used unstable 'proto-matter' in building the Genesis device to solve 'certain problems'. Without it, he claims that the Genesis Project could have been delayed by years or would have never been completed at all. The unstable matter puts the planet in a state of accelerated evolution that will conclude with the planet's premature destruction.

A huge alien probe approaches Earth and begins sending strange highly amplified signals which boil the oceans, drain the power from nearby ships and cause widespread mayhem. Admiral James T. Kirk and his crew return from their mission to revive Captain Spock on Vulcan, despite knowing that they will face court-martial for the theft and subsequent loss of the USS Enterprise, when they hear about the current crisis. Spock, who is still recovering mentally, discovers that the alien ship is trying to contact humpback whales, which unfortunately were hunted to extinction three centuries previously. Kirk orders their hijacked Klingon Bird-of-Prey, renamed the Bounty, to slingshot around the sun in order to travel back in time to the late 20th century. Arriving in San Francisco, California in the year 1986, the crew hides their cloaked ship in Golden Gate Park. Thereafter, they attempt to find both the whales needed to communicate with the alien probe, as well as materials to contain the whales and to restore the Bird-of-Prey's power source, which was nearly drained in travel. Kirk and Spock eventually recruit the assistance of Dr. Gillian Taylor, a cetacean specialist, who is caring for two humpback whales in the cetacean institute in Sausalito.