Somewhat superbly, the “I’m not” line wasn’t actually scripted. It was shouted out by a quick thinking crowd-scene extra. The pythons liked it so much it was kept in and he was mentioned in the credits. Source - memory from reading one of the pythons’ biographies a few years ago.

This is the one moment that contains the whole message of the film condensed into a brief gag that seems so silly on the surface, but goes surprisingly deep. This is easily my most favorite scene of that movie.

That was the one scene that stuck with me when I first saw it in the early 80s when it came out on video. It's still probably my favourite scene.

It's funny when you watch it as a youth. It's get even funnier and more poignant and insightful when you watch it as an adult. You catch so many historical, political, cultural, linguistic, etc references that you missed as a kid.

If you teach your kids latin, they'll appreciate the movie that much more.

Thanks for posting that quote, it's one of my all time favourites. "You might all be individuals but I'm not", to quip. It's funny and deep at the same time.