Neeson's 'The Grey' tops box office with $20M

Beware the Liam in Winter. Liam Neeson's "The Grey" topped the weekend box office with $20 million, according to studio estimates Sunday, continuing the actor's success as an action star in the winter months.The Alaskan survivalist thriller opened above expectations with a performance on par with previous Neeson thrillers "Taken" and "Unknown." Those films, both January-February releases, opened with $24.7 million and $21.9 million, respectively.