I haven't seen the movie yet, but Todd McCarthy's review of Sam Mendes' adaptation of Richard Yates' Revolutionary Road—aka, My Favorite Novel Ever—sounds exactly like my gut told me it would be when I found out who was making it. This bit says it better than I ever could:
Revolutionary Road is a very good bigscreen adaptation of an outstanding American novel -- faithful, intelligent, admirably acted, superbly shot. It also offers a near-perfect case study of the ways in which film is incapable of capturing certain crucial literary qualities, in this case the very things that elevate the book from being a merely insightful study of a deteriorating marriage into a remarkable one.
I hate passing judgment on things that I haven't experienced for myself, but in this case, I am just about 100% certain that my reaction to the film won't stray very far from McCarthy's.