I went through puberty late. I was a little, little, tiny kid. I was still growing in college.

I had just left 'Saturday Night Live' when I came to 'The Daily Show,' and it just felt like Jon was on my side. I'll always be grateful to him for that. I just got the impression he wanted me to succeed, and then I wanted to succeed for him. I think that's good leadership.

In the Marine Corps, I was used to people doing what they said and saying what they mean. There was a higher purpose and calling in the Corps. Everyone works toward accomplishing something together, and there's a common goal. In entertainment, the same isn't always true. You're in it for yourself in Hollywood.

Just take yourself back to September 2001. As that month went on, and as that autumn unrolled, everybody wanted to do something. How can I help? Do you want my blood? Do you want money for the victims? I was a captain in the Marine Corps. I knew what I could do. I was right there. I was ready. I saw it. I moved the rubble with my own hands.

You are an athlete when you're onstage. You can't get tired.

As much as football can cause war, it can also cause peace. Football is a kind of Geiger counter of civilisation, or a catalyst for good as well as bad.

I've always been into sports and being physical.

My older brother was always in the gym, and I saw how hard he worked. Around middle school, I was in there with him, and I started to love it. But it wasn't like I had a basketball in my hand at age 2.