Episode:1x04
The Naked Time

Jack's Rating:

A mysterious alien virus strips the Enterprise crew of their inhibitions, exposing their innermost thoughts.

Features: Time Travel
Stardate: 1704.2
Air Date: 09/29/66
Director: Marc Daniels

Jack's Review
Easily one of the greatest Star Trek episodes ever. It has everything. Even Sulu shirtless and fencing! Oh, you must like this one! They even reused the story in The Next Generation.

Episode:1x19
Tomorrow is Yesterday

Jack's Rating:

The Enterprise is thrown back in time to 20th Century Earth after a close encounter with a black star, and is reported as a UFO by an Air Force pilot.

Features: Time Travel
Stardate: 3113.2
Air Date: 01/26/67
Director: Michael O'Herlihy

Jack's Review
Here we have the first true time travel episode in Star Trek history. The Slingshot effect would be reused in several episodes across the Trek universe. There is something fun about modern people coming face to face with the Enterprise crew and this story is loaded with excitement and comedy. Over the years this episode has cemented itself as one of my favorites. If memory serves this is the first appearance of the "Kirk-fu" move nicknamed "the Captain's log" where Kirk throws his whole body at a group of attackers. So fun!

Episode:1x28
The City on the Edge of Forever

Jack's Rating:

After an accidental overdose of the stimulant cordrazine, Dr. McCoy jumps through a time portal on a deserted planet and ends up on Earth in the 1930's.

Features: Time Travel
Stardate: 3134
Air Date: 04/06/67
Director: Joseph Pevney

Jack's Review
Here we are, perhaps the finest science fiction television episode ever. Time travel in its finest as penned by the immortal and enigmatic Harlan Ellison....Perfect acting by Deforest Kelley, Leonard Nimoy, William Shatner, and Joan Collins really makes this episode sparkle. What makes this episode so great? It's the message of friendship, risking everything, and doing what must be done against all odds. You can't help but be touched by the look on Kirk's face during the climax. The fact that this episode concludes with the only swear word in all three seasons is rather fitting based on what the crew had gone through.

Episode:2x26
Assignment: Earth

Jack's Rating:

The Enterprise travels back in time to 1968, where Kirk and Spock help a mysterious stranger named Gary Seven avert a nuclear crisis.

Features: Time Travel
Stardate: Unknown
Air Date: 03/29/68
Director: Marc Daniels

Episode:3x23
All Our Yesterdays

Jack's Rating:

Spock and McCoy are trapped in a planet's distant past, where Spock finds love with an exiled woman.

Features: Time Travel
Stardate: 5943.7
Air Date: 03/14/69
Director: Marvin Chomsky

Jack's Review
Such a great penultimate episode. I would have thought, as well done as this one is, the studio would have kept the show going. I love the way the away team gets split up. Mr Atoz (yep, A to Z) is a terrific character and Mariette Hartley is amazing - although she will always be the short-lived wife of Dr. David Banner on The Incredible Hulk way back in 78. Heck, she even won an award for that role -and you can see how good she is in this early venture as well.