Continuity mistake: The lamps on either side of the door to the house are not there in some scenes - most noticeably in the opening credits, but in other scenes they are there.
Continuity mistake: When Terry MacNamee is talking to Father Ted on the phone on the island, his tie is blown over his shoulder. After a cut to Father Ted, his tie is hanging straight. After another cut, it is back over his shoulder again.
Continuity mistake: Immediately before Ted and Dougal enter the fortune teller's tent, there is a scene which appears to have been shot much later in the day than those on either side - it's almost night time.
Visible crew/equipment: In the fortune-teller's tent, just as Ted chooses his second card, the boom mic enters the frame above Dougal's head.
Visible crew/equipment: When Dougal and Jack are on the Whirly-Go-Round, a crew member's hand can be seen on the far right of the screen spinning it around.
Revealing mistake: When Henry Sellers jumps out of the window, it's apparent that it's pre-cut glass.
Continuity mistake: As Father Crilly is shouting at Father Jack "No, not your room, not your room." to get up out of the spare bed, watch closely and as Father Ted strikes him in the face, notice that his hand doesn't even touch his face, and his hand stops several inches away from his face, using only his reaction and the sound of a punch to illustrate a punch at all. (00:18:15)
Revealing mistake: In the scene were Mrs Doyle is listing the rude words and phrases used in one of Father Ted's favorite author's book's, she goes through all of them fine. Apart from the last one, when she says "Get your boll*cks out of my face" you can hear her laughing in the word "boll*cks" before she exits the room.
Revealing mistake: When Jack's wheelchair is at the top of the cliff and about to fall off, it's obviously a stuntman and not Frank Kelly sitting in it. Similarly, when the wheelchair falls, the dummy used isn't even dressed like Jack. (00:14:25)
Continuity mistake: Father Dougal's hair changes position during the scene in the car, before they go on holiday.
Revealing mistake: When Ted and Dougal are climbing the big rock after seeing St. Kevin's Stump, it's so obvious that a light is being shone on them from behind. They both have shadows even though it's a dark and cloudy day.
Revealing mistake: At the end when Ted flushes the toilet and kills the priest, we see an outside view of the priest and if you look at the bottom of his robes you can see a black square thing hanging down from the inside which must have been squirting the water out of his robes. Also to prove this, you are not able to see any water coming from the drain in the ground, which does not make any sense.
Other mistake: The bishop that Dougal talks to about religion being pointless is supposed to be Irish but when he is telling Ted about his change of heart, the actor's English accent slips back in for a few seconds.
Old Grey Whistle Theft - S2-E4
Continuity mistake: When Ted is talking to Sergeant Hodgkins as he takes off in the helicopter outside John and Mary's shop, Ted's hair is messy and windswept. However, when he walks in the shop moments later his hair is neat and tidy.
The Plague - S2-E6
Visible crew/equipment: During the attempted rabbit race, when the cages open, you can see a crew member's arm as he tosses the rabbit out of the cage second from the left. (00:10:20)
The Plague - S2-E6
Audio problem: When Bishop Brennan calls for the first time at the start of the episode, Ted panics and pretends to be French before hanging up the phone. You can still hear Bishop Brennan talking on the other end of the line for a few moments after Ted hangs up, which obviously shouldn't be possible.
Cigarettes and Alcohol and Rollerblading - S2-E8
Revealing mistake: When Ted jumps onto his bed (when the nun replaced their mattresses with bricks), you can see both beds are bouncy when Ted lands on his bed and Dougal lifts back the covers on the bed half way through the episode. (00:19:20)
Cigarettes and Alcohol and Rollerblading - S2-E8
Visible crew/equipment: When Ted and Dougal look into the window of Dick Byrne's house, the rope pulling Father Cyril's skateboard is visible. (00:21:50)
Visible crew/equipment: When Father Cave gets up to give his speech and he turns to Father Gallagher, you can see the boom mike move in the top left corner. (00:15:15)
Continuity mistake: Ted and Dougal are sitting in the fourth row from the back for the journey. But when Ted presses the emergency button and after the credits, three completely different men are sitting in their seats. Everyone has been given seat numbers so they should not be sitting there.
Chosen answer: It's characteristic of someone putting on a fake Irish accent.