Star Trek: The Next Generation (1987)

S4E19 The Nth Degree

Stardate 44704.2. An enigmatic alien probe alters Barclay, turning him from a socially challenged individual into a boastful intellect capable of merging with the Enterprise's computer via the holodeck. As his newfound abilities unfold, Barclay grapples with the implications of his transformation, leading to unforeseen challenges and consequences for both himself and the crew.