Star Trek: The Next Generation – Emergence [7.23]

A life form begins to spontaneously develop aboard the Enterprise through a network of semi-intelligent circuit nodes.  The ship’s systems begin to malfunction as this emergent life form attempts to create a body for itself.  The crew discover that mish-mash of holodeck programs all running at once represent the life forms subconscious, and by interpreting the strange imagery in this “daydream” are able to help the life form and save their own lives.

Star Trek: The Next Generation – Interface [7.3]

Geordi learns that his mother, a Starship captain, has disappeared along with her ship.  At the same time, he is on a mission in which he is assisting with a rescue mission via a drone that he can see and hear through via virtual reality.  Geordi begins to experience visions of his mother asking him for help,

Star Trek: The Next Generation – Suspicions [6.22]

Dr. Crusher tells Guinan the story of how she found herself involved in the murder of a Ferengi scientist who is attempting to develop a new form of shielding, which led her to disobey orders and get herself relieved of duty. 

Star Trek: The Next Generation – Time’s Arrow, Part II [6.1]

Picard and the crew settle in 19th century earth, where they track the presence of the time traveling aliens.  Data re-connects with his shipmates, and the crew wind up in the cave where Data has his head blown off. 

Star Trek: The Next Generation – Time’s Arrow [5.26]

The Enterprise is called to earth when an engineering crew working underground turns up Data’s head! 

Star Trek: The Next Generation – Hero Worship [5.11]

Data rescues Timothy, a young boy who is the only survivor of a disaster in space.  Timothy who has lost his parents, bonds with Data and even begins to imagine himself as an android in order to cope with his grief. 

Star Trek: The Next Generation – Darmok [5.2]

When he and Picard are unable to communicate, the Captain of a Tamarian vessel arranged for the two of them to be stranded on a planet with an invisible and aggressive monster.  Picard eventually realizes that the Tamarian communicate purely by metaphor

Star Trek: The Next Generation – In Theory [4.25]

In spite of his inherent limitations, Data engages in a romantic relationship with Lt. Jenna D’Sora, a fellow crew member. 

Star Trek: The Next Generation – The Nth Degree [4.19]

During a repair mission, a unknown energy causes changes in Lt. Barclay’s personality, leading him to become super-intelligent, and eventually to transfer his higher brain functions into the ship’s computer and take it over. 

Star Trek: The Next Generation – First Contact [4.15]

After an injury, Riker is discovered to be an alien observer on a barely pre-warp planet.  The planet’s leader’s are divided on how to respond to the first discovery of alien life.