There’s nothing like an enraged diva — Beyoncé Knowles giving a head butt to the psychopathic blond who’s trying to kill her and steal her husband — to bring out the crowds on a spring weekend. Enough customers were transfixed by the fatal-distraction drama Obsessed to place it at the top of the weekend’s box office chart with a surprisingly robust $28.5 million, according to early studio estimates. The PG-13 thriller more than doubled the take of its nearest competitor, 17 Again, and earned nearly as much over the weekend as the total of the three other movies that opened in wide release
