Are they about to buy the doc?

HBO is reportedly on the brink of snatching up the rights to a "behind-the-scenes documentary" about Barack Obama, says the New York Post.

The paper says the unfinished doc's cameras have been rolling for almost two years, and it's being produced by none other than 'The Incredible Hulk' star Edward Norton.

HBO reportedly wants to air the film "within the first 100 days" of Obama's presidency, if he wins, that is.