With a razor-sharp script and Jennifer Garner winning laughs in a nice change-of-pace role, this cynically funny and pointedly pertinent not-so-subtle spin on the national battle between right and left wing politics scores lots of comic bullseyes.

There's something about this film's churn of goo and grit that lingers ambivalently, difficult to digest.

The film was shot in Louisiana, which looks nothing like Iowa. Nobody along the way seems to have a care in the world about cholesterol. And it's the first movie in history that makes Hugh Jackman look repulsive.

Garner hasn't come across as amusing as she is here in quite some time. Despite many funny bits, Butter also, at times, seems to excoriate the blinkered Midwesterners in the flyover states.

It's the film's unwillingness to deal with the sometimes hilarious and often problematic things its characters say and do that stands as one of its ultimate failings.