One senses that this is an intensely personal project for Binder, who is not as forgiving as he might be toward the mercurial mother. Still, the film is carried by Costner and Allen, who project a chemistry so incrementally built on reluctant camaraderie, they almost seem like siblings.
The Upside of Anger belongs to Joan Allen (for whom director/screenwriter Mike Binder developed the project).
Owen GleibermanEntertainment Weekly
The Upside of Anger is overly therapized, yet Costner and Allen show you what it means not just to play a role but to inhabit it.
Scott TobiasThe A.V. Club
The film's outsized ambitions are deceptive: Everything here is less than meets the eye.