Greenberg is a tense movie by the director of Margot at the Wedding, another movie about difficult people struggling to connect.
Greenberg stars Ben Stiller as an angry, frustrated 40 year old man whose life hasn't worked out as he had hoped. He is house-sitting for his wealthy brother, and reconnects with friends from his past. He also develops a relationship with his brother's assistant. But he pushes everyone away with his self absorption, his irritability, and his hostile outbursts. Most intriguing, disturbing, and somehow charming, was the connection between Greenberg and the assistant, Florence. Although he was abusive toward her, and you don't really want her to be with them, there was something sweet and promising there as well.
Although the movie includes some amusing moments, for the most part I found it too uncomfortable and unsettling to really laugh.