(UPDATED) Two big names on location, two very different stories to report:

'Lost' fans will not be happy to hear that Matthew Fox, who played heroic (but hotheaded) Dr. Jack Shephard, has just been arrested for allegedly assaulting a woman. Fox, who is in Cleveland filming 'I, Alex Cross,' was arrested early Monday morning after reportedly punching a female bus driver in the chest and stomach after she refused to let him board a private bus. The driver told TMZ the actor was drunk and that she had to punch him back in "self-defense."

Meanwhile, over the weekend, Pitt was praised for his heroics in coming to an extra's aid on the 'World War Z' set when she fell while filming a crowd scene. According to local reports, a group of over 700 extras was filming a scene in Glasgow's George Square, which involved a mad rush to escape a zombie attack. A woman who fell was in danger of being trampled, until Pitt lifted her to her feet and saved her. The woman suffered only a grazed knee.