South Park creators' separate lives
South Park creators Matt Stone and Trey Parker have revealed they have managed to live separate lives and still create comedy together.
The comic partners - who celebrated the 15th anniversary of the hit show at a party in Los Angeles - have been working together since the early 90s, and revealed they used to do everything together, until they were married.
Matt said: "We used to live together literally and then you'd live together and work together and go out and drink together. We don't do that, we have kind of our own lives and our own houses now."
Trey added: "But when we get back into the room it's kind of the same as it always was."
The writers and directors revealed they were brought together by a love of British comedy Monty Python's Flying Circus and that they tried to emulate it in South Park.
Matt said: "Both of us we grew up and we met because we were huge Monty Python fans. And what we both loved about Monty Python was when you tuned in, you never knew what was going to happen, you had no idea.
"So there's part of that with South Park that we always try to do - like it may start here, but you have no idea where it's going to go."
Among the guests at the party were Duran Duran, Superbad star Michael Cera and Inglourious Basterds star Eli Roth.
Eli confessed: "I'm a huge South Park geek. I'm a total Matt and Trey nerd. I think these guys are so smart and creative I'll see anything they do."