The Simpsons has been presenting TV episodes since 1989, and even mounted a full-length movie a decade ago – but tonight’s installment, “The Great Phatsby,” is the first one-hour episode in its amazingly long and impressive history. It’s about a long-time rival of Mr. Burns, a successful rapper named “Jay-G.” And the Great Gatsby references go on from there – as do the references to Empire, a fellow Fox TV hit. Taraji P. Henson, who plays the outrageously flamboyant Cookie on Empire, steals the show here, too, as the hip-hop mogul’s ex-wife, here called Praline. Other stars lending their vocal talents to this episode include Keegan-Michael Key, Snoop Dogg, Common, and RZA.