MOVIESKevin James co-wrote, co-produces and stars in "Paul Blart: Mall Cop." So you wonder why he struggles for so much of the movie to find his comic rhythm. Even though he created the character of a shopping mall security guard with an insecurity complex as large as his girth, the funny business eludes him until far too late in the movie. Solid TV spots have created enough awareness for this comedy to gain some traction opening weekend. Mid-level business could follow.