The filming of the episode The High Riders is shown in the movie Once Upon a Time... in Hollywood (2019). Rick Dalton ( Leonardo DiCaprio ) reluctantly accepts the part to shore up his stumbling career. Timothy Olyphant plays James Stacy, the star of the television show Lancer. Luke Perry (in his final film role) plays actor Wayne Maunder. Stacy and Maunder played the Lancer brothers on the show. Nicholas Hammond plays episode producer/director Sam Wanamaker.
The villain character Leonardo DiCaprio's Rick Dalton plays in Once Upon a Time... in Hollywood (2019) is based on the character played by Joe Don Baker, including the mustache.
The Lancer pilot was originally a long format TV movie named "Homecoming" but when the series was picked up, the pilot was edited to the standard one-hour show length and retitled The High Riders.
Quentin Tarantino pays homage to this episode in his opus about Hollywood in the late 1960s, Once Upon a Time... in Hollywood (2019).
Producer / director Sam Wanamaker was primarily a stage actor in Britain and was enormously influenced by Shakespeare. The sometimes florid and overly arty nature of Shakespeare's plays affected Wanamaker's direction. Although this is a TV western, the two protagonists dash off without wearing cowboy hats (obviously a rationalization by Wanamaker) and they are both wearing plaid shirts (which is very odd, but definitely a Wanamaker decision), leaving one to wonder if the action is taking place in present-day, the camera work is more like that of TV detective shows of the era, and many of the shots are very odd. This is all due to Wanamakers theatrical background. This quirkiness is played on by the portrayal of Wanamaker and his direction of this episode in the film Once Upon a Time... in Hollywood (2019).