One of my favorite movies, ever. His performance was dead on of a terribly repressed gentleman and mother's boy attempting to court a red-blooded but socially constrained Edwardian woman. It brought tears both times I saw it. The rest of the cast was also fantastic in their roles, not even to mention the scenery, production and writing and the soundtrack.
Ben Mankiewicz (Sp?) hosting Turner Classic Movies said that DDL wanted to play George Emerson in Room with a View. Don’t know if true or just rumor (or a DDL joke) Both roles were obviously cast correctly — dontcha think?