Doc Flew Over the Cuckoo's Nest

S3, E7: Doc finds himself taken captive by a psychotic nurse and her surviving mental patients in an homage to "One Flew Over the Cuckoo's Nest" but with Zombies. Doc discovers that 10K is also being held prisoner by the lunatics, who plan to give him a lobotomy to cure him of his delusions about a mission to capture a blue man and save the world.