Mark Ruffalo

I was an introverted kid; I liked my time alone. And the rest of my family is pretty extroverted, so I felt like a bit of an oddball. They're very gregarious and charming and charismatic people. I always felt like I was struggling as a young person. I think everyone was very surprised to hear that I wanted to be an actor.

I always wanted to be a surgeon, because I had a lot of admiration for my father, who is also a surgeon. I also wanted to be a heart surgeon. That was motivated by the fact that my young aunt, a sister of my dad, died in her early 20s of a correctable heart disease.