Sony's PSP Wows, but Only if You Stick to the Games

By Rob Pegoraro Sunday, March 20, 2005; Page F07 Sony has often won big by thinking small. Portable gizmos such as the Walkman, the Discman and the Handicam helped make this company the consumer electronics power it is today. But until now, it hasn't tried to run that play with its most successful product of the past decade, the PlayStation line of video-game machines ......