I think circumstance was a friend to director Jason Reitman with respect to Up in the Air. This film was meant to be made much earlier, but other films pushed this one back to 2009. I think the current economic climate is extremely relevant to the success of this film.

Ryan Bingham spends his life flying from company to company firing employees he has no connection to and has never met. His job is to handle the way people react to the news that they no longer have a job, and make sure that they make it through the experience alright, or at least get through that first day with enough sanity to turn things around on their own later on. He tells people, quite convincingly, that there are bigger things than employment, that their children admire them for following dreams rather than bringing home a paycheck, that it's ok to start over. He, on the other hand, holds on desperately to a job that is becoming obsolete thanks to a young up-and-comer who proposes moving much of the interaction to the internet, thus removing the need for Ryan to be in constant motion around the country.
Ryan's only real goal has to do with acquiring frequent flyer miles. Everything in his life becomes portable and temporary as he fails to put down any roots. Only George Clooney could portray this character as likable through all his flaws. He's charismatic and engaging, and then dismissive and shallow. Many aspects of this film are pleasantly real. As with Reitman's other films, he doesn't shy away from harsher truths and doesn't go out of his way to tie up loose ends with a happy ending, but he still manages to create driving and enjoyable films. The tension between the freedom of a travel-sized life and the fulfillment that comes with responsibility plays out beautifully in the scene where Ryan reaches his magic number of miles, although I can't say too much about it without giving things away.
It has the feel of a small movie, more like Thank You For Smoking than Juno, despite the highly-recognizable cast. It has the gloss and pop of a big-budget film while retaining a trust for the intellectual capacity of its audience, which pays off in the quality and depth in the way Reitman treats the subject matter.
