You know that "Living Literary Legend" Philip Roth? He just turned 75. He wrote that thing about chicken liver. And he's still writing. His latest novel, Indignation, is coming out in September, far enough away that Roth hasn't even had his requisite fawning profile in the Times. But Scott Rudin has already bought up the movie rights in a seven-figure deal. Hey, you think being a recluse is cheap? It ain't. The only problem is that Philip Roth movies are never good. Why not?