I auditioned for the role of Clark Kent on Smallville. It got down to Tom [Welling] and me, and they ultimately went for Tom, which was the right decision. Two seasons later, they called and said, "We've been thinking about you," and pitched me the role of Lana's boyfriend. I said, "Yeah, that sounds cool." When I got the call from Supernatural, I had a whole other year left on Smallville, so that drastically changed my storyline. I ended up turning evil a little ahead of the plan!