Father Jack
So obviously Father Jack is the funniest character in the show, he's the stand-out one like Edmund in the 'Blackadder' series, or even Sheldon from 'The Big Bang Theory' (as much as I detest that show).
So put simply, what do you think was Jack's best line or scene? For me personally it has to be the absolutely random line from 'Think Fast Father Ted', where they attempt to move Jack's chair across the room, and out of nowhere he wakes up and bellows 'I'M A HAPPY CAMPER!' befire immediately falling asleep again. Gets me in stitches every time I see it.