Christopher Null from filmcritic.com says "Frankly we've come to expect far better from screenwriter Charlie Kaufman," after seeing Confessions of a Dangerous Mind. He also says...
"Favoring first-year film school tricks like shooting in dark shadows, using oddball angles, bleaching the film of color, and careless editing, the movie comes off as more of a goofy home video project Clooney made in his spare time than a serious film."
... which is exactly the kind of thing I was worried about back when I was all doom-and-gloom re: Clooney being at the helm. Nonetheless, Null seems to have enjoyed a large part of the movie. I loathe over-directed films, especially if the source material is already weird enough.