These are the things that 2019's Once Upon a Time in Hollywood got historically right. Quentin Tarantino may play it fast and loose with the facts most of the time but some of the time he's pretty on point — how close to home did he hit it with his new movie? From the Manson Girls' favorite music to the name of Roman Polanski's dog to Bruce Lee's surprising client we're looking into the real-life history behind QT's latest fantasy.