Here's Philip Seymour Hoffman, having a gush over Mr. Rock 'n' Roll:

It's when he's asked about Charlie Kaufman, though, that he really perks up. In the film, due out next year, Hoffman plays . . . a rumpled New York theater director attempting to build an exact scale replica of New York City.

"Kaufman is terrific," he says immediately. "He's just so bright and one of the most deep, deep feeling and thinking people you'll ever meet. That was hard material, incredibly complex." He stops himself for a moment. "I'm trying not to be overly effusive but I can't say enough. I adore him and I'm so glad he asked me to do it. That was one of those things, where you just say, thank God he asked me to do it!" (Source)

Very cool. The same article's over at the LA Times, too. Thanks to Micah and Tim.