Father Ted - Grant Unto Him Eternal Rest - s1e6

Sixth episode of season one. The nature of this episode suggests that it was going to be the last episode ever (well it was the last in the season one anyway) Here Father Jack has got quite old and passed away and it was his last wish for Ted and Dougal to spend the night in the chapel with him before the burial. Basic storyline which has been greatly elaborated in order to encompass some good humor. The passing away of Father Jack was the sort of thing you'd have as an ending to the series anyway as well as the cliffhanger that was present at the very end, which must have shown their interest in another season.