All 6 members of Python consider if the greatest of their 4 films and 99.9% of everyone has seen all 4 movies call it the greatest. I don't know anyone who has seen all 4 films in their work to not call Brian the best other than a select few.
It's their only film worthy of criterion!
The most famous moment out of all the python films:
[youtube=425,350]pCWw6W5NEa8[/youtube]
Great scenes:
[youtube=425,350]ZNeq2Utm0nU[/youtube]
[youtube=425,350]krb2OdQksMc[/youtube]
Brian's mother: What star sign is he?
Wise Man #2: Capricorn.
Brian's mother: Capricorn, eh? What are they like?
Wise Man #2: He is the son of God, our Messiah.
Wise Man #1: King of the Jews.
Brian's mother: And that's Capricorn, is it?
Wise Man #3: No, no, that's just him.
Brian's mother: Oh, I was going to say, otherwise there'd be a lot of them.