Quentin Tarantino believes that "Once Upon a Time in Hollywood" is his best movie, and there are many film fans out there who probably agree with him. While it's hard to decide which Tarantino joint ranks at the top of the list, the 2019 period drama is arguably the most mature and contemplative film in his entire back catalogue. Not only that, but it also serves as a love letter to a bygone era of Tinsel Town that died long ago, which is reflected in the movie applying some revisionist history to the pilot episode of the '60s TV Western "Lancer." What's more, a walk-in bathtub made this storyline possible.

In "Once Upon a Time in Hollywood," Leonardo's DiCaprio Rick Dalton appears as a villain in the aforementioned episode of "Lancer," which was released during a time when the actor's career was on a downward turn. Meanwhile, Luke Perry...