
Continuity mistake: When the Fraternity house is being taken down, the Greek letters switch places. (01:06:05 - 01:06:55)

Directed by: John Landis
Starring: Donald Sutherland, Kevin Bacon, Tim Matheson, Karen Allen, John Belushi, Tom Hulce, Stephen Furst, Mark Metcalf

Continuity mistake: When the Fraternity house is being taken down, the Greek letters switch places. (01:06:05 - 01:06:55)
Dean Wormer: Fat, drunk and stupid is no way to go through life.
Trivia: During the scene where John Belushi is sneaking around, you see him slip and then get back up. The slip was accidental but the film makers left it in the movie.
Question: Near the end, when Dean Wormer and Mayor DePasto are in the grandstand, officially launching the parade, there is an elderly gentleman in the background (also in the grandstand, about 2 levels up, on the left side of the screen) who is making odd, excited gestures and comical facial expressions. His appearance and odd mannerisms are so striking that he draws my attention away from the dean and the mayor every time that I've seen this film, and that's a lot of times. Surely, director John Landis must have been aware of the gentleman and his antics in the background through multiple takes, so it would seem Landis intended the peculiar distraction. Who was that gentleman, and was there any significance to his appearing in the scene?
Answer: Sometimes these things get left in because it's simply the best take. (The child covering his ears before the gunshot in "North by Northwest," for example.) It could also be that John Landis cast the extra because he wanted someone with goofy expressions in the crowd. He simply could have told the extras "Ok, be excited that you're at a parade," and that's how this extra did it.
Captain Defenestrator