ST:TNG:93 - "The Nth Degree" (Stardate: 44704.2) - this is the 19th episode of the 4th season of Star Trek: The Next Generation.
Dwight Schultz makes a welcome return as the terribly shy Lt. Reginald 'Reg' Barclay III, who because of a powerful charge knocking him unconscious while he's on an Away Team to repair the Argus Array (a remote sub-space telescope), he starts exuding newfound confidence.
But soon this newfound confidence makes him the smartest being who ever lived, and that's not the end of it - soon he will "interact" with the computer itself! How far will the process go and can he be reverted back to normal?
Trivia note: the Argus Array will be seen in a future TNG episode (in the 7th season episode "Parallels"), as well as Jim Norton as the holodeck simulation of Albert Einstein (in the 5th season closer "Descent, Part I"). It's also hilarious to see Barclay bumbling through a play!
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