Music often happens even faster than comedy in terms of the creation.

I've been doing Nixon pretty much my whole professional life. I was in this comedy group called the Credibility Gap in Los Angeles when he was president. I was doing Nixon on the radio, and when we did live shows I physicalized him - if that's a word - for the first time. And then I did a Nixon sketch on a very short-lived NBC show called Sunday Best.

I didn't have a lot of independent film connections. It really took until the digital film revolution came along that I realized that I could do it myself.

Satire is an art best practiced behind the back of the intended target. I think inviting politicians on a satirical show becomes a very big trap. Because one of two things happen: Either you have to kind of unsharpen your fangs because you can't be quite as cruel to people to their face as you are behind their backs... Or you don't defang, and those guests get the word and they stop coming.

I think the British learn their history through the prism of this gallery of grotesques known as the royals.

Because I don't do stand-up, radio has always been my equivalent, a place to stay in connection with the public and force myself to write every week and come up with new characters. Plus it's a medium that – having grown up with it and putting myself to sleep with a radio under my pillow [as a kid] – I love. No matter what picture you want to create in the listener's mind, a few minutes of work gets it done.

In the year and a half I was on SNL, I never saw anybody ad lib anything. For a very good reason - the director cut according to the script. So, if you ad libbed, you'd be off mike and off camera.