This is hysterical. A must-see, for sure. I reference it daily, but since it came out in 1970, not very many people get the reference. However, I think that Common Sense rated the appropriateness of this one too low (that's a first!). On for age 11? I think 11 is probably a bit too young for this movie. There's a scene with nudity. No private parts are shown, but it's still not really appropriate for 11 year olds.