The Ten Commandments (1956)
After watching the first 15 minutes of the "classic" Ten Commandments I realized that it is perfect Riffing fodder.
I went to a Catholic High School and every Easter, when this would air on TV, I use to joke that I fail asleep about half way through the Commandments. So I did not know the last 5. Use to get the best look from the Brothers who try to teach us.
Lindsay Nale commented
Please! Oh Please! This HAS to happen!
High on the list of films that had absolutely no business being nominated for the Best Picture Oscar--