The Beatles wanted to do a LotR movie, starring:

McCartney as Frodo, Starr as Sam, Lennon as Gollum and Harrison as Gandalf. The Beatles' choice of director? Stanley Kubrick, fresh from making 2001: A Space Odyssey.

But Tolkien didn’t like the idea of a pop group being associated with his books. I am not sure about that cast either, but just imagine Kubrick’s Lord of the Rings. In the style of Barry Lyndon, perhaps? (ᔥMarginal Revolution)