Treehouse of Horror XIX - S20-E4
Nelson: Touch me and I'll cut your friend.
The Grand Pumpkin: What do I care? That's a yellow pumpkin.
Nelson: [Gasps] You're a racist.
The Grand Pumpkin: All pumpkins are racist. The difference is I admit it.
The Simpsons (1989)
1 quote from Treehouse of Horror XIX
Continuity mistake: When Homer's Vegas wife shows him the video in front of Marge, it shows Homer kissing Ned. This didn't happen when she showed it in the Vegas episode.
Trivia: The Simpsons holds the record for most guest stars; it is also the only non-variety show to have had appearances from three former Beatles (Paul, George and Ringo).
Question: Which episodes feature the "Howling Dog" (usually used on outside shots of buildings)?