P4X-884
P4X-884 is the home planet of Togar and Urgo. Togar used false images of a tropical paradise to lure visitors to his laboratory. Technologically advanced but unaccustomed to travel, he implanted visitors with Urgo, a brain implant, as a means of recording and experiencing other worlds vicariously. SG-1 visited the planet and was implanted with the device, and they returned from P4X-884 fifteen hours later with no memory of the planet.
Episode Reference: Urgo