YMMV / Star Trek: The Next Generation S3E15 "Yesterday's Enterprise"

• Angst? What Angst?: No one in the alternate timeline seems to consider the fact that replacing their timeline with another one could easily be seen as erasing themselves from existence whether or not there's a living version of them in the other timeline. It's effectively a suicide mission for everyone.
• Growing the Beard: One of the key episodes that made Season Three so memorable.
• Harsher in Hindsight:
  • Tasha's daughter, Sela. Tasha Yar isn't killed when the Enterprise-C is destroyed—some survivors are brought to Romulus and kept as prisoners, including Tasha Yar. She would proceed to have a half-Romulan child named Sela, who is revealed in the Expanded Universe of Star Trek Online to have gone back in time 200,000 years and instigated the Iconian War, which claimed billions if not trillions of lives as well as causing the Hobus Supernova which destroyed Romulus in 2387, depicted in Star Trek (2009).
  • Tasha goes back with the Enterprise-C so that her death will not be meaningless. Except as "Redemption" later establishes, she survives the fight, is taken prisoner by the Romulans, taken as the "consort" of a Romulan Commander, who impregnates her, and, after a few years, tries to escape with her daughter, who, upon realizing that her mother is taking her away from her father, calls for the guards, and Tasha is executed. So while she managed to save the Federation with her actions, she lived long enough afterwards to die a rather pointless death anyway.
  • In Star Trek: Generations, the Enterprise-D gets destroyed the same way as the alternate Enterprise-D does in this episode: damage from a Klingon attack causes a coolant leak, starting a warp core breach. As a bonus, the damage begins from the same spot and the warning issued by La Forge regarding the coming warp core is almost identical in both this episode and Generations, differing only in his estimate of the time until the breach occurs.
• Hilarious in Hindsight:
  • The planet the crew is headed for is called Archer IV, long before Jonathan Archer was ever established as a character and the captain of the Enterprise NX-01.
  • A plot-significant officer on the Enterprise-C is named "Richard Castillo", or in English, Richard Castle.
• One-Scene Wonder: This episode contains the only appearance of the Enterprise-C and her crew in the entire franchise, but boy is it memorable.
• Retroactive Recognition:
  • Christopher McDonald had appeared in a number of small roles and even co-starred in a feature film that time forgot (Paramedics) but had yet to become a recognizable character actor. His villainous turns in Thelma & Louise and Dutch soon after this episode aired helped spring him into prominence, and he's probably best known as Shooter McGavin in Happy Gilmore.
  • Babylon 5 viewers will recognize Captain Garrett. Her actress, Tricia O'Neil, would later play the President of the Earth Alliance in one of the TV movies.