Treat Williams as Jack Dempsey completely PWNS the movie that was done on Marciano with Vince Vaughn's buddy John Favreau (or however its spelled) as Rocky. At least Treat Williams looked like Dempsey more so than Favreau did. Also, with a cast that included Clay Hodges and other fighters, Treat Williams as Dempsey was far more authentic than the Marciano movie that just revolved around Marciano's fight with Joe Louis [who was played by that porker who Honey Roy Palmer kayoed in Diggstown].