Power ballads, in one form or another, have been a part of rock and roll almost since the genre began. But there's no doubting that the format hit a new high in the '80s. And you'd be hard-pressed to find a better example of this mini-genre than the stirring "Sister Christian" by Night Ranger. What is "Sister Christian" about? How did the band come up with its restrained-to-rocking arrangement? And what classic movie brought the song to a new audience via an unforgettable needle drop? Let's go motoring back to the '80s to find out all the answers.