Star Trek: The Next Generation — 3x15 — Yesterday's Enterprise
Synopsis
An Enterprise from the past mysteriously appears.
Remarkable scenes
- Worf laughs at the thought of any human woman not being "too fragile" for him.
 - The transformation from the starship Enterprise into the warship Enterprise.
 - Tasha Yar's appearance.
 - Picard not wanting to be specific of which ship he commanded: "This is Captain Picard of the Federation Starship... er... a Federation Starship!"
 - Guinan's intuitions.
 - The Enterprise D operating on such a nicely superior level of efficiency in the alternate timeline.
 - Likewise I love the retro feel of the Enterprise C.
 - Picard and Guinan arguing over which history is the "correct" history.
 - Guinan freaking out over Yar.
 - Guinan explaining Tasha's death to Yar.
 - I like how the writers gave Yar a better send off in this episode than in Skin of Evil.
 - Picard: "Let's make sure that history never forgets the name. Enterprise."
 - The battle between Enterprise D and the Klingons.
 
Review
The idea that a ship from the past entering the future and instantly changing history is fascinating. This episode has everything a great Trek episode needs. Excellent continuity, a genuine and interestingly new dilemma, action, and excellent character development. Tasha Yar's guest appearance was wonderfully appropriate and Guinan's involvement in the story was a rare treasure. Truly one of TNG's finest moments.
