Because this film lacks substance, so too would a full-length review.  Hence, the return of the "mini-review:"

Reviewed By: Emanuel Caros

As made apparent in other films, an all-star ensemble of filmmakers and actors working together leads to nothing less than good results.  But somehow with Due Date, director Todd Phillips (Old School, The Hangover) finds a way to make talent powerhouses Robert Downey Jr. and Zach Galifianakis mediocre.  Both actors have such robust personalities and premier acting chops, that to box them into such shallow characters (a neurotic businessman and a doofus) is criminal.  Still, consistent with Phillips' past films comes a barrage of comedic quotables; and the back-and-forth between Galifianakis and Downey Jr. is enjoyable enough to overcome poor character development.  

But is it enough to make up for a hapless plot in which nothing substantial occurs?  While Seinfeld made the "show about nothing" cool, a movie about nothing doesn't work nearly as well.  Forced to drive cross-country together after an airplane incident that is wayyyy too familiar, what follows is a series of random events that become watered-down in the overall scheme of things.  The film strives for Apatow-esque heart, but doesn't delve deep enough into the sympathetic issues to work properly.  So while Zach and RDJ are charming as ever, Due Date fails to utilize them to their full potential, leaving but a shell of what could have been a hilarious film anchored by a big-time comedy duo.
6/10