Every generation has teen idols .
And like most fads, they are as fleeting as Furby dolls. While their fame may last more than 15 minutes, few young stars enjoy prolonged celebrity. Anthony Michael Hall couldn't. Others don't necessarily fall off the radar screen voluntarily. Witness, for example, the fate of Molly Ringwald , Macauley Culkin , and Anthony Michael Hall none of whom is exactly burning up the big screen these days.