This week's cover: How 'Paranormal Activity' became a scary box-office smash

Paranormal Activity began its otherworldly existence as a little horror flick, made for $11,000 and shot entirely in the director's house over the course of seven days. Now, thanks to a little help from Steven Spielberg and a savvy world-of-mouth marketing campaign by Paramount, its box office total has reached $62 million and counting. Hollywood