“I’m literally angry with rage!”: The Squire of Gothos (TOS) vs. Where No Fan Has Gone Before (Futurama)

The crew of the Enterprise meet Earth’s biggest fan, and the cast of the show meet Star Trek’s biggest fan.

“Above all else, a god needs compassion”: The Cage (TOS) vs. Where No Man Has Gone Before (TOS)

The series so nice they made a pilot, twice

“If we’re going to be damned, let’s be damned for what we really are”: Encounter at Farpoint (TNG) vs. Emissary (DS9)

In the first episode of TNG, Picard wants to see what’s out there, and in the first episode of DS9, Sisko’s not afraid to get his hands dirty.

“Is there a John Luck Pickurd here?”: Yesteryear (TAS) vs. Tapestry (TNG)

Young Spock learns that the needs of an injured pet outweigh the needs of its owner, and young Picard learns that getting stabbed through the heart can be good, actually.