Is Hollywood's biggest male star losing it? In the past few days, Tom Cruise has been hauled over the coals for allowing his devotion to Scientology to overshadow his film career, ridiculed for a seemingly loopy appearance on Oprah Winfrey's daytime chat show and accused of conducting a sham romance with the younger actress Katie Holmes strictly for publicity purposes. Ordinarily, such chatter would be no more than background gossip in a town that thrives on gossip, little or none of it substantiated. But Cruise's recent behaviour has been so spectacularly off-the-wall that it has prompted senior executives at Paramount...