I grew up with a lot of cats like that and they always were so surprising, magnetic, and electrifying. You can't be with them too long because they burn you out but the energy, the impulsivity, and the freedom connecting them to their animal energy is just so powerful to watch. It's dangerous to live like that but it's riveting to watch.

I did 40 voices for Chris Wedge, the director of the first film, before coming up with the version we used. He was hard to please, I don't know why. I gave him really slow talking voices. then I thought perhaps Sid could be an Indian sounding sloth. To find out more about my character, I watched footage of sloths. I discovered that the food they store in their pouches rots and ferments and half the time they're drunk.

I love life, and I embrace every minute of it.

Well I was about to be expelled from school, I had been arrested and a teacher said: "Why don't you try acting, instead of distracting the class? Why don't you use your comic talent for something more productive?" My maths teacher suggested I do comedy and I decided to have a go. I pursued it after that. I was about 17.

Some kids are fine, but often I don't like what I see in child actors. My kids are young and they are already showing an interest, so I have to try to discourage them, squash that in them.

Sid [the character from 'Ice Age'] is a prehistoric sloth. Sloths move really slowly and they store food in the cheek pouches. That's where I got the voice that you hear. He had to sound as though he was storing food.

I really love it, I love working with directors that are very collaborative and allow me input. I've done over 75 films, it's just like you're an apprentice. You learn so much about camerawork, lenses, and I'm always talking about DPs and directors and they always give me lists. I think pretty soon, I'll be ready to move away from being in front of the camera.