Due Date - Downey Jr. and Galifianakis
What do you get when you cross the comedy dream-team of Robert Downey Jr. and Zach Galifianakis with a cross country road trip? If the newly released trailer (courtesy of Yahoo Movies) for Warner Bros.' 'Due Date' is any indication -- pure hilarity!

'Due Date' sees the unlikely duo of father-to-be Peter (Downey) and quirky actor Ethan (Galifianakis) embark on a mishap-laden trek across the country to get long-suffering Peter back to his wife's bedside before she delivers their first child, after Ethan gets them thrown off a plane and relegated to the federal No Fly list. Due Date - Downey Jr. and Galifianakis
What do you get when you cross the comedy dream-team of Robert Downey Jr. and Zach Galifianakis with a cross country road trip? If the newly released trailer (courtesy of Yahoo Movies) for Warner Bros.' 'Due Date' is any indication -- pure hilarity!

'Due Date' sees the unlikely duo of father-to-be Peter (Downey) and quirky actor Ethan (Galifianakis) embark on a mishap-laden trek across the country to get long-suffering Peter back to his wife's bedside before she delivers their first child, after Ethan gets them thrown off a plane and relegated to the federal No Fly list.

We're pretty sure that this trailer doesn't do justice to the comedy gold of Downey and Galifianakis as they riff off each other all the way from the Mexican boarder to the Grand Canyon.

The film, directed by Galifianakis' 'The Hangover' helmer Todd Phillips, is due (ha ha) in theaters on Nov. 5, and also stars Michelle Monaghan, Jamie Foxx and Danny McBride. Will you be watching?