User blog comment:Zelron/Soul of the Dragon (Why the soul gotta be black?)/@comment-5280592-20121002234112/@comment-3492791-20121003023851

You can easily get someone to cast soul trap on you. You can disarm someone and drop a soultrap-weapon. They'll pick it up and hit you with it. I think it will even still do that "captured soul" animation when you die. XD

But since these encounters are random and not controlled, they don't really count. I meant the two times we've been undisputably soul trapped as part of the plot of a quest. In Chasing Echoes and The Black Star. In the latter we actually go inside a soul gem (being Azura's Star). It's actually very pretty in there.