I didn't like it that much at first but it keeps growing on me. I'd put it above some of the other critical favorites this year. (Arcade Fire, Andrew Bird, LCD Soundsystem).
A lot of people who loved their old stuff seem to curse the album for being 'mainstream', but that's not necessarily fair. There's a little scent of hipsterism lingering in the air when the second an album debuts at number one, all the people who used to love them say they aren't so great anymore.