I've always had a dark side that's gravitated toward the Dominant Identity. Watching villains capture superheroines, monsters kidnap damsels, I always fantasized about being in that role, have a sexy damsel faint in my arms and I carry her away, spraying a superheroine in the face with knock out gas and taking her back to the lair, shooting a space babe with a stun ray and bringing her back to the ship.
Understand, I'm very much in to the usual suspects of BDSM, the bondage, blindfolds, lite levels of delivering pain, etc., but I've always done it, or preferred to do it, through the context of a creative roleplayed story. It's amazing to me how much kink and BDSM can be found in everyday movies and TV shows, but has gone under the radar for the most part, considered socially acceptable.