Goodbyeee (1989)
Final and highest rated episode of Blackadder Goes Forth (1989) (fourth season of Blackadder) Blackadder pretends that he's insane to avoid certain death carrying out the General's order for the "…
*from live action TV shows with at least two seasons, 30,000 votes and a 6.5 rating
Note: episodes are listed in chronological order
See part 2 here.