This draws obvious comparisons to Planes, Trains, and Automobiles, and while I've never been a fan of Steve Martin, I find it extremely funny, largely because you care about the two lead characters. I love RDJ, and had high hopes for Due Date because he is in it, but... well, the draft script must have been a lot funnier than the finished product, as I barely raised a smile throughout. Here is a man desperate to get home to his wife about to give birth to his first child, and he punches an obnoxious kid in the stomach, spits at an injured dog, and is generally a b*stard throughout. I have never seen Zach Galifianakis in anything before, and on this offering, I will avoid all future films. Atrocious.