What? You didn’t think I was serious? Jell-o, a nineteen-twenties aesthetic…and Joan Crawford in Our Dancing Daughters, circa 1928, a naughty, scandalous flapper… Madcap youth! The 1950’s, a changing aesthetic, and Jell-o UNLEASHED: One of my favorite films of all time about the birth of talkies, Singin’ in the Rain,…