Four new wide releases are joining a crowd of films competing at the box office over the Martin Luther King Jr. holiday weekend. They include the Paramount family film Hotel for Dogs , the Lionsgate horror film My Bloody Valentine 3-D (which was not screened for critics), the Sony comedy Paul Blart Mall Cop, and Fox Searchlight's musical biopic Notorious. In addition, two high-profile films that had been playing in limited release -- Paramount Vantage's holocaust movie Defiance and Overture's Dustin-Hoffman starrer Last Chance Harvey -- are being moved into wide release, following their limited releases to qualify for Oscar consideration last month. Nevertheless, most box-office analysts are predicting that the film to beat this weekend will be the same film that emerged at the top of the heap last weekend, Clint Eastwood's Gran Torino.