HBO has a habit of transforming itself periodically; I recall my father’s insistence years ago when we subscribed, arguing that it wasn't adult material. Now, HBO focuses on weighty political stories, but previously it offered remarkable, unique television shows. During the late 1980s and early 1990s, it was known for its comedy programming—stand-up performances, Comic Relief, Mr. Show, and original movies that were genuinely hilarious. El Diablo came about during a period when HBO prioritized comedy, and that’s apparent in the film. It's a comedic Western presented without winks to the audience, making it among the funniest of its kind and an early example from the brief resurgence of Western films.

Source on TMDB