I watched this movie on the plane on my tablet and it was acceptable. Ferrell mixed in a few of his well-known mannerisms and there were some funny parts. However, large chunks of the movie were over the top and I'm not sure what to think about Galifianakis. He reminds me a bit of Andy Kaufman in that you either love him or you hate him. I haven't decided yet.
Anyhow, if you need a movie to help kill some time, I recommend this one. Ass and titties.