Ryan Bingham, the protagonist of Jason Reitman’s warm, smoothly made comedy “Up in the Air,’’ is another of George Clooney’s playboy loners. They live inside a membrane of narcissism until some force - be it love or justice - attempts to break in.
In “Up in the Air,’’ the membrane is punctured early. Ryan works for a consulting firm that companies hire to reduce their staff. The firm is thinking of cutting back itself. Ryan’s boss - played by Jason Bateman, doing unctuous as only he can, like a 21st-century Dabney Coleman - has brought in a sharp young woman named Natalie Keener (Anna Kendrick) to slash the company’s travel budget by 85 percent. With her giant ponytail, power suits, and ludicrous lexicon (“glocal’’ is her term for “global’’ and “local’’), she’s like a corporate warrior sent from a business-school hatchery. Even her toothy smile is a kind of occupational armor.