Farscape - Season 2 Episode 22 -

The neural chip in Crichton's head is driving him insane. He pleads with D'Argo to kill him. They take him to a healer to have the chip removed. The chip takes control of Crichton, and someone on Moya will pay the price before Crichton can regain control of his body. Scorpius arrives just after they start the procedure to remove the chip.