Probably acting. I loved to go to the acting course at school. Played a bigger role in a theatre play in that same school. I was more of a quiet guy, but had no problem turning into (most) roles and playing scenes.
Had a good friend who was part of a theatre club and passionate too, so working with him was even more fun.
My role-play seemed to be so impressive/surprising, that it was praised in the final year book by several anonymous comments inside my profile page.
Today I'm a CS grad and acting is still interesting, although it's unlikely that I will pursue this path.