Consensus:Greenberg's title character is harder to like than most, but Ben Stiller's nuanced performance and a darkly funny script help take the misanthropic edge off.
As a study of stasis and of people conscious of not living the lives they had imagined for themselves, the picture offers a bracing undertow of seriousness beneath the deceptively casual, dramatically offhand surface.
Stiller is expert at playing self-indulgent types unaware of their boorishness, and Greenberg is no exception.
His sharpest observations are reserved for preternaturally intelligent, hyper-self-conscious outsiders whose existential crises are the failure of the world-and, to some extent, themselves-to live up to their own high expectations.
A film of powerful, memorable moments -- some striking dialogue, some great performances, a handful of beautifully played, bracingly discomfiting love scenes -- in search of a structure and, perhaps, a soul.