People just like to be on camera. There's a huge desire to be in front of the camera, and once there, people will say and do almost anything. It's sort of a drug, and I think people get addicted to it.

I think when someone who's known for doing drama does a comedy but just tries to be funny, that's a mistake.

When I first started looking at Twitter, I followed people like Steve Martin, who will just write the funniest non sequiturs now and then, which I thought was really fun. That's kind of the road I've taken. Every now and then, something comes into your mind and you put it out there. It's very innocuous. I think it's kind of fun.

[And on going from character to leading actor] I don't approach anything differently; I just approach it as a character. I'm always astounded at the fact that I've ever played a leading character in anything [Laughs]. And my wife concurs with that, frankly. She always thought I would be, at best, the wacky neighbor on a sitcom, so this is all just a surprise and a joy.

Being a leading man... that's like saying I want to be astronaut. That's not going to happen.

Some people just derive great joy from making other people laugh. And I do, but I don't feel like I need to do it 24 hours a day.

You never saw Peter Sellers the actor trying to make you laugh. All he was doing was the character. What I'm saying is that I don't think you should know you're in a movie. I don't like it when actors are winking at the audience and saying, 'Right, isn't this funny? Are you with me?'