This is comedy in the darkest shade of black. Observe And Report observes and reports on the life of the tragically flawed character that is Ronnie Barnhardt, from the minute his mall becomes the target of a flasher operating in the car park. Ronnie leaps into action when the flasher targets the subject of his wildest dreams - trashy mall beautician Brandi - which also marks the beginning of his feud with Detective Harrison, sent out to deal with the situation.
Seth Rogen, familiar to many from his shlubby lovable loser characters in Judd Apatow's films, swings completely to the dark side in this role as bipolar Ronnie, which is probably his finest performance so far. He continues to carry out his mall duties obsessively, dealing out his own brand of justice, as he spars with Ray Liotta's Harrison - Harrison just wants to do his job, but is gradually driven to despair by Ronnie's continual ignorance, nuisance, and presence. Michael Peña is particularly hilarious as Dennis, Ronnie's 'right hand man' in mall security, and his performance is perhaps the only one you don't feel dirty inside for laughing at.
Be aware that this is definitely NOT a family movie though - it's not too graphic, apart from a prolonged section of full-frontal male nudity, though the themes in this film are more mature than plenty of 18 certificates I can think of. For instance, besides Ronnie's delusional nature, and often terrifying behaviour, there's some flat-out racism, date rape, and armed adults jumping and beating up teenagers.
This is a very funny film, though most of the time it's a slim choice between laughing and crying. Equally though, it is a great study of Ronnie's character, even if many of the things you see you may not want to remember!