Here you've got four Berrys in the field of view-- Chuck, Charles, Charles, and Ingrid. (In our family we spent a week or two trying to say the "family rosary" together, but we never got this many together to sing raunchy songs). (Another video clip from the Pageant.)
I made my case on www.chudberry.com/forum-- but here's the thing: Someone needs to do another documentary and capture some of the best of these latter day Chuck Berry performances on professional guage videotape. Maybe they could even get him to say a few things. There's something magical about the way Chuck Berry is winding down his performance career. It would be nice to see it preserved.