Here is a great article called: What Are the Best Shakespeare Movies?

(Apologies if I posted this before. I had planned to post it when it first came out in April and now I can't remember if I posted the link or not before. lol :-)

It says: "My Darling Clementine

John Ford’s western about Wyatt Earp has an unforgettable scene where a traveling actor (Alan Mowbrey) stumbles through Hamlet’s “To be or not to be” soliloquy in a barroom full of drunks. When he forgets his lines, Doc Holliday (Victor Mature) leans forward and finishes the speech. And in that handoff, when Shakespeare’s words are taken out of the mouth of an actor and taken up by a spectator in a saloon, something too familiar suddenly comes to life. We hear what Hamlet’s saying because it’s not Hamlet, it’s Doc saying the words—a man living with the death sentence of tuberculosis, which puts him on more than a nodding acquaintance with matters of life and death. And yes, Ford is riding on Shakespeare’s shoulders here, but this is still one of the most transcendent and touching—yet unsentimental—scenes in any movie. "