Bargaining makes you come up with the best ideas.

No, writing musicals is the hardest thing in the world. And it was really funny, because I remember when the South Park movie came out, there were some critics that said, 'Well it's obvious that in order to get it to be 90 minutes they filled some time with music.'

So much of what you see now in Hollywood is written and directed by committee, and you can see it.

My first serious girlfriend, when I was 16, was Mormon. I went to her house for 'family home evening,' and I was like, 'Why aren't you people ignoring each other and watching television?'

When I was in sixth grade there was a talent show, and I wrote my first sketch, 'The Dentist.' I played the dentist, and I had my friend play a patient. It was sort of what can go wrong at the dentist, and I just remember I had lots of fake blood and everything.

It's not like we have a formula, but I think one of the reasons this show has survived is that it has a big heart at its center. Other cartoon shows have people crap on each other and make racist jokes. But I don't think people tune in for that. I just don't think a show lasts for 10 years without a heart.

I like to fancy myself more of a musician than anything else.