The Clown Prince of Crime
Super Freak
Again, though, look at The Wizard of Oz; look at the films that surrounded it, and all that it accomplished during that time. The point is that this is all subjective. You, or Jye, or even I can't objectively say that one film is superior to another, because film is art and art is subjective. Hell, you could say that Kurosawa's work was the most influential of all time, as its effects were felt in films ranging from Star Wars to The Magnificent Seven; the list goes on and on.
Of course film is subjective. Whether or not you like a film, that's subjective because no one can say that you are right or wrong for liking a film. However, I'm not just talking about what a film accomplished during a specific time period. The Wizard of Oz had great special effects in 1940, that's a fact. It's also a fact that modern films have better effects than the Wizard of Oz...that's not subjective, I don't think. When I say that ROTK is the greatest cinematic achievement, I'm not saying it because I like the film or because it's my favorite, which is not.
If we objectively look at ROTK, there is no other film so far that has been able to excel in every category to the level of greatness of that film. Name another film that comes even close to succeeding in every discipline imaginable. Is the acting, the makeup, the lighting, the costumes, the directing, the cinematography, the score, the writing...etc.. in The Wizard of Oz better than ROTK? No not really, and I don't think that an opinion has anything to do with those disciplines that I just mentioned. Now, you can prefer one film over the other as far entertainment goes, that's subjective.