Robert Downey Jr. & Zach Galifianakis in 'Due Date'
Between The Hangover and Dinner for Schmucks, Zach Galifianakis has become the new king of the buddy comedy. Now, in Due Date (in theaters Nov. 5), he's teamed up with Iron Man himself, Robert Downey Jr. In a road trip filled with hijinks and obstacles, anxious expectant dad Peter (Downey) drives cross country with aspiring actor Ethan (Galifianakis) after getting kicked off a plane so that Peter can get to the hospital in time for his baby's birth. Though they don't exactly get along at the beginning of their trip -- "I despise you on a cellular level," Peter tells Ethan -- the two slowly form a strange bond, with Peter going so far as to kiss Ethan during their car ride. We guess that what happens on a road trip doesn't stay on a road trip!