It's been 25 years since Tipper Gore and the ladies of the PMRC (Parents Music Resource Center) self-righteously rode the the rescue of delicate ears across America, claiming that rock music was "infecting the youth of the world with messages they cannot handle." It was the 1950s all over again. The list of the infamous "Filthy 15" songs that they claimed were highly objectionable seems almost laughable today, given the inclusion of such artists as Sheena Easton and Cyndi Lauper (who really lis