Star Trek: The Next Generation – Galaxy’s Child [4.16]

Geordi is discouraged when Leah Brahms, the Enterprise’s senior engine designer, and a woman whose holographic image he had become infatuated with, visits the ship and berates him for the modifications he’s made to the ship’s systems. 

Star Trek: The Next Generation – Shades of Gray [2.22]

When Riker is infected by a mysterious infection, the only way to stop it from killing him is to stimulate his memories.  That’s it.

Star Trek: The Next Generation – Q Who [2.16]

Q turns up asking to be allowed to join the Enterprise crew, to serve as guide for the unknown dangers that lie ahead.  When Picard refuses, Q determines to prove that the Enterprise is not ready for what is out there, and facilitates an encounter with the Borg

Star Trek: The Next Generation – Time Squared [2.13]

The Enterprise inexplicably encounters one of their own shuttlecraft drifting in space, carrying an unconscious Captain Picard from six hours in the future. 

Star Trek: The Next Generation – The Child [2.1]

As the Enterprise is tasked with the perilous task of delivering a series of highly virulent germs to a needy planet, Counselor Troi is impregnated by a disembodied energy creature.

Star Trek: The Next Generation – The Neutral Zone [1.25]

As the Enterprise is ordered to investigate the destruction of outposts along the Romulan neutral zone, they intercept a ship carrying cryogenically frozen people from the 20th Century.

Star Trek: The Next Generation – Arsenal of Freedom [1.20]

The Enterprise investigates a planet of weapon manufacturers where all life has abruptly disappeared, along with an investigating Starfleet vessel. 

Star Trek: The Next Generation – Heart of Glory [1.19]

The Enterprise picks up three Klingon fugitives whose presence creates a particular dilemma for Lt. Worf.  These Klingons are unhappy with the way that peace with the Federation has impacted their people, and long for battles and glory.  When Klingon authorities come to arrest them, they escape, and Worf must face down their leader with the Enterprise at stake.

Star Trek: The Next Generation – 11001001 [1.14]

While docked at a starbase for maintenance, Riker is astounded to meet an attractive and extremely realistic holodeck character called Minuet.  Meanwhile, the Enterprise crew are tricked into abandoning ship

Star Trek: The Next Generation – Datalore [1.12]

Returning to the destroyed colony where he was originally found, Data and the Enterprise discover and reactivate an identical android known as Lore.