Although this was always intended to be the last episode it is all the more poignant as Dermot Morgan (who played Father Ted) actually died the very next day after filming for this episode!
All the information you need for this series at Father Ted 1 "Good Luck, Father Ted"
Ted gets the opportunity of a lifetime, but can't bring himself to break it to the others that they're not invited. The title is a pun on the movie Coming to America. Musician and artist Brian Eno appears as "Father Brian Eno" at the "It's Great Being a Priest!" convention. The episode ends with a montage containing one clip from every previous episode, in reverse order. (From Wikipedia).
The Questions for series 3, episode 8 - "Going to America"
How many photos of a sunburnt Dougal are shown? This is A
Dougal is reading a book about going to America. How many letters in the first word in the title? This is B
So put your answers in the formula below to give you the co-ords for the cache:
N51 45.(B-1)(A+B)(B+A) W002 42.(A+A)(B+1)A
Caches set in accordance to Natural Resources Wales guidelines.