If the goal of "Observe and Report" is to show us the dark, transgressive side of Seth Rogen, then the movie is a bust. Rogen can no more creep us out than he could dazzle us with his knack for Elizabethan drama. It's not his fault that the first thing we perceive whenever he appears onscreen is the lovable shlubbiness that's made him a star; it does seem to be his fate here, however, to be unable to find his way out of that persona. And he's not helped by the movie's muddled conception. Whenever his character — Ronnie Barnhardt, mall cop — suddenly goes nasty (smacking a kid, insulting a blameless counter girl, heaping ethnic invective on an Indian mall merchant), it comes out of nowhere. We're eventually informed that Ronnie is bipolar, but that's just a narrative Post-it note: The movie has no interest in exploring an emotional disorder, and simply invoking one can't justify the script's lack of character motivation and its general disorganization.
Director Jody Hill wrote the screenplay himself. In scripting his last film, "The Foot Fist Way," he was assisted by its star, the gifted Danny McBride. "Foot Fist" also concerned a clod without a clue, but McBride's tickling, astringent borishness was enough to sell the character; no doctor's note was necessary. McBride makes a cameo appearance in "Observe and Report," playing a wild-eyed crack dealer, and his unhinged comic energy gives the movie a jolt of giddy pleasure.