New Trailer! Robert Downey Jr. in 'Due Date'

Robert Downey Jr. and Zach Galifianakis star in the hilarious new comedy "Due Date," from the director of "The Hangover." Downey Jr. plays a high-strung father-to-be, who is forced to hitch a ride cross country with an aspiring actor in order to make it to his child's birth on time.

"Due Date" is due in theaters Nov. 5.