With $32M haul, tearjerking chick flick unseats blue beings after 8 weeks
                                
                                
                                    (Newser) -
                                    For the first time in 2010, a movie other than Avatar ruled the weekend box office, as the Nicholas Sparks chick flick Dear John unseated the sci-fi phenomenon with a $32.4 million debut. James Cameron's latest, which opened Dec. 18, did $23.6 million to finish second and run...