TNG - 3x03 - The Survivors

The Enterprise investigates two survivors living on the only unobliterated patch of land on a devastated planet.
http://memory-alpha.org/en/wiki/The_Survivors


TNG - 3x13 - Deja Q

As the Enterprise tries to restabilize a moon's orbit before it impacts a heavily populated planet, Q once again appears, only this time he's been stripped of his powers and wants refuge on the Enterprise.
http://memory-alpha.org/en/wiki/Deja_Q


TNG - 3x14 - A Matter Of Perspective

When Riker is charged with the murder of a prominent scientist, each side uses the holodeck to show their side of the story.
http://memory-alpha.org/en/wiki/A_Matter_of_Perspective


TNG - 3x16 - The Offspring

Data creates an android "daughter," but Starfleet wants to take her for study.
http://memory-alpha.org/en/wiki/The_Offspring


TNG - 3x21 - Hollow Pursuits

A reclusive crew member's holodeck fantasies start to interfere with his work, while the Enterprise suffers a series of inexplicable malfunctions.
http://memory-alpha.org/en/wiki/Hollow_Pursuits

Deja Q. "Au contraire mon capitan! Heeeeee's baaaack!"

Deja Q.