To me, every episode is like a song, and every season is like an album. There's that part of the day when you first get the idea and you say, "This could be really funny." And you sit down and you write it. There's just something that happens there that doesn't happen when you really give it a lot of time beforehand.

So we're considering doing a new Christmas album, because there's been Christmas episodes since then, and maybe finally do the version of 'The Most Offensive Song Ever' with lyrics intact.

I don't want to say never, but I hope I don't become that 'take me seriously now' guy.

Saying goodbye doesn't mean anything. It's the time we spent together that matters, not how we left it.

Love isn't a decision. It's a feeling. If we could decide who we loved,it would be much simpler, but much less magical

I think that parents only get so offended by television because they rely on it as a babysitter and the sole educator of their kids.

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.