Revealing mistake: When the riot police are running into the concert, you can see a 'cardboard' police officer leaning against his car, doing absolutly nothing, not even blinking or talking into his police microphone. (00:07:45)
Revealing mistake: When Skinner starts to drive the bus, he says "Off we go". During this shot the sky is a brighter colour when you look out of the bus windows than if you just look outside the bus. (00:12:15)
The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1
Continuity mistake: Lewis changes from black to yellow when Milhouse dares Bart to pull Santa's beard off. (00:14:10)
TV Announcer: The Continental Soccer Association is coming to Springfield. It's all here: fast kicking, low scoring. And ties? You bet.
Bart: Hey Dad, how come you've never taken us to see a soccer game?
Homer: I don't know.
TV Announcer: You'll see all your favorite soccer stars. Like Arriaga, Arriaga II, Barriaga, Aruglia, and Pizzozza.
Homer: Oh, I've never heard of those people.
TV Announcer: And they'll all be signing autographs.
Homer: Woohoo!
TV Announcer: This match will determine once and for all which nation is the greatest on Earth. Mexico or Portugal.
Trivia: Maggie scans as $847.63 in the supermarket at the beginning (not NRA4EVER, as Troy Maclure asserts in 3F31 "The Simpsons 138th Episode Spectacular), the price it costs to feed and care for the average American baby every month.
Question: Which episodes feature the "Howling Dog" (usually used on outside shots of buildings)?