The 'Joker' Director Missed the Mark With This Robert Downey Jr./Zach Galifianakis Comedy

Back in 2010, Robert Downey Jr. and Zach Galifianakis were riding high on their newfound fame and money.

The world was in love with Downey, who had unexpectedly become Hollywood's biggest A-list star after assuming the role of Marvel's Iron Man,

thus launching what would become the Marvel Cinematic Universe. Following that was his Oscar-nominated performance in Tropic Thunder,

followed by his major part as the legendary investigator, Sherlock Holmes. Meanwhile, comedian Zach Galifianakis eventually 

made it big with his portrayal as Alan in the global mega film The Hangover. But do you recall when both stars co-starred in a road trip buddy comedy?

It was the 2010 film Due Date. Downey and Galifianakis are an eccentric couple in a rowdy comedy that serves as a spiritual heir to the Steve Martin and John Candy comedy Planes, 

Trains, and Automobiles. Due Date was a very popular film for its time, with an A-list cast, but it's hardly discussed these days. 

Oh, and it was directed by Todd Phillips, a filmmaker best known to moviegoers and comic book lovers for a picture called Joker.