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Diana joins forces with Chinese and Soviets to stop a scientist (Roddy McDowall) who plans to turn the world into one huge volcano.

An old girlfriend contacts MacGyver to help her stop a nuclear reactor from exploding and destroying a community.

MacGyver faces a deadly extortionist who has planted a bomb on a ship in an effort to gain several million dollars.

A corrupt city councilman demotes Sammo and Terrell to parking enforcement to keep them off his track.

A noise complaint at a heavyweight boxer's home leads Riggs and Murtaugh to a case involving illegal gunrunners; Trish worries about the impact Riggs may have on Murtaugh's health.

Escaped felons hiding in a church take two nuns hostage and threaten to kill a group of battered women if their demands are not met.

Walker and Alex go under cover at a posh resort to prevent a possible terrorist strike against some of the world's wealthiest businessmen.

A general (Gregory "Pappy" Boyington) visits; burned Pappy is attracted to a beautiful nurse (Anne Francis).

As the general's (Gregory "Pappy" Boyington) visit continues, Pappy learns the nurse (Anne Francis) he loves is married.

Goldman and Alex attend an embassy party; Zeke and Seymour have to postpone romance when a psycho breaks loose.

Anderson, Johnson and Ruiz train four Vietnamese recruits whose inexperience poses problems.

Two of Saunders' men die trying rescue a hated soldier trapped between them and the enemy.

The Gorillas race their German counterparts to rob a Swiss bank of industrial diamonds.

A civilian master technician (Burgess Meredith) invents a device that allows B-17's to bomb accurately through cloud cover.

Jonas and the team must travel through enemy territory to bring a bride to her groom, preserving a truce between two warring Afghan tribes; Kim and Bob try to expose a man linked to terrorists.

The team's attempts to raid an anthrax lab are thwarted by an official from the Department of Defense (Michael McKean), who believes his high-tech intelligence is superior to field logic.

Jonas and the team force a Department of Defense official to go with them on an assignment and experience the realities of war; Kim and her children are secretly reunited.

Reno (Lorenzo Lamas) assists his karate master (James Shigeta) when a former pupil (Roger Yuan) attacks a councilwoman.

Reno is cursed when he goes to New Orleans in search of a murderer; Bobby experiences a series of mishaps.

Planting redwood trees; an urban farm; recycling textiles.

Servals; African bullfrogs.

Flavor, The Octopus, Tar Pits.

Looking at some of the most vibrant fish in the seas, rivers and lakes, including angelfish, clownfish and pufferfish.

The Joker duplicates Batman's utility belt.

The Joker plans to gas everyone at a boat launching.

A toy maker (Frank Gorshin) uses dangerous playthings as part of a plan to replace a trio of top scientists with android doubles.

A gang of phony investment operators gets a double for Jimmy.

A wealthy girl tries to hire Superman for a party.

Lois dreams Superman proposes to her.

Clark and Lois are umpires in a treasure hunt on Dagger Island.

A wrestler with an aneurysm is alienated from his son, and mobsters are after his ex-wife; guest Roddy Piper.

Walker (Chuck Norris) tries to clear Trivette (Clarence Gilyard) after he is suspended by an old enemy (David New Nurse) following the accidental shooting of a 6-year-old boy.

Walker and the Sons of Thunder team up to take on a drug lord.

A woman needs Walker and Trent (Chuck Norris, Jimmy Wlcek) to defend her from her abusive, drug-dealing husband. With Clarence Gilyard.

Conspirators kidnap a scientist for a genetic discovery that enable them to create invincible warriors.

Cordell and James make a shocking discovery; Stella and August have a traumatic afternoon; Liam takes a concern to the Davidson's door.

Stella and Colton plan a Walker/Davidson family dinner; Liam tries to prove that the Davidsons were up to no good on the day Cordell raced for the ranch; Cassie vows to learn the truth about the last case her previous partner was working on.

On a mission to 1960s Earth, the Enterprise finds a human agent (Robert Lansing) working for aliens; guest Teri Garr.

Troi, Worf and Alexander strap on their Wild West six-guns for a holodeck adventure that inexplicably turns into a violent encounter.

The crew concocts a plan to help Vic Fontaine regain control of his Las Vegas holosuite lounge from a mobster who's bought the hotel.

When a shuttle crash critically injures Capt. Janeway, she sees her dead father, Adm. Janeway (Len Cariou).

After T'Pol contracts a disease, Dr. Phlox consults physicians on her home world and learns that Vulcans with the affliction are ostracized.

An amnesiac woman fleeing killers on the streets of Paris runs into MacLeod, who tells her they were lovers 300 years ago.

An overindulged aristocrat who lost his holdings when he became an Immortal 400 years ago has held a grudge against MacLeod ever since.

Hugh Fitzcairn asks MacLeod to find the person responsible for ending his life as a comfortable manor lord in the 1920s Britain.

Reno infiltrates a gang of cattle rustlers who are using a traveling rodeo to front their activities.

A drug dealer specializing in steroids has Reno, Cheyenne and Bobby racing to save a female bodybuilder from addiction.

At an abandoned Army post, Johnny encounters a strange man who claims to be acting insane to avoid being killed.

An argument over cards turns to a standoff between cowhands and Hoby.

Josh is hired by a conscientious gun salesman to find a defective gun.

A marshal refuses to release an Army deserter.

Cheyenne and Billy the Kid join forces to help a woman in trouble.

John convinces an editor to open Tucson's first newspaper, but exposing local corruption puts the man in danger.

A beautiful Russian defector helps MacGyver track the double agent responsible for killing three operatives.

The team helps brother-and-sister lumberjacks thwart a crooked union boss intent on driving them out of business.

The team interrupts a war between crime syndicates to rescue a government witness's (Dana Elcar) daughter (Leah Ayres).

B.A., Hannibal and cohorts infiltrate a car factory to capture a gang of ruthless auto-parts thieves.

Drug smugglers operating from a tropical island hold the team's former Vietnam medic (James Callahan) captive.

A gang of toughs jeopardizes the team's reputation by posing as the four and terrorizing rodeo performers and spectators.

A U.S. oil company wants order restored in a makeshift community housing workers for a South American electrical-power plant.

When three murders occur that appear to be unconnected, the team makes a discovery -- a plot for revenge.

The CSI team members collaborate with the FBI on the investigation into the murder of a ballistics expert.

When Dr. Robbins' wife discovers a nude corpse in their bedroom, the CSI team begins an investigation.

Capt. Kirk races against time after an alien woman materializes on the bridge and steals Mr. Spock's brain.

Data acts as an advocate for three intelligent "machines," not realizing that his decision may have dire consequences for Picard.

Bashir's trip to Romulus puts him at odds with both Romulan Intelligence and Starfleet's covert Section Thirty-one.

The onset of Vulcan mating season throws the away team into turmoil when a Vulcan crew member's advances trigger Torres' involuntary mating instincts.

Capt. Archer mediates a dispute between Vulcans and Andorians threatening to go to war over a small planet.