This film, along with BARTON FINK, THE HUDSUCKER PROXY, THE MAN WHO WASN'T THERE and A SERIOUS MAN are the most underrated Coen Bros. films in my opinion.
The dialog is sharp as a tack (watch the video below). Clooney is perfect. The character names are ridiculous and fun (as in HUDSUCKER). Picture a modern version of HIS GIRL FRIDAY and other screwball comedies of the 30s and 40s. Don't be fooled by the lame poster and the way the film was marketed. This is pure Coens.