How does it feel to be part of an iconic new Disney animation?
"The reality of that statement is slowly dawning on me. This will be on the same shelf as The Aristocats, Jungle Book and Cinderella. That's pretty amazing! I'm over the moon about it. I love Disney, so I'm really, really happy to be involved."
What goes through your mind when you hear your voice come out of an animated character like Sergeant Calhoun?
"It's mind blowing. Imagine it for yourself… Your voice coming out of the mouth of a gorgeous, hot woman. I love it. She's just like me 20 years ago with a kick-ass body."
How much input did you have into your character?
"[Wreck-It Ralph director] Rich Moore is the nicest man in the world and he encouraged us to improvise all the time. He would say, 'If this line doesn't feel right in your mouth, pick another way to say it.' They were really open for it to be our own voice - but the writing, especially as the script progressed, became more and more our voices. The characters also started to look more and more like us because they videotaped us while we recorded our lines. They are geniuses over there at Disney. They really allowed themselves to be moved by and shaped by whatever they saw on the videotapes of our sessions. It was pretty amazing."
How much did the look of Sergeant Calhoun evolve during the movie's production process?
"In the beginning, she was much more generic. She didn't look like me. I think she was always a blonde, but she wasn't that curvaceous and sexy, if you will. That haircut is new, too. I love that cute little bob!"
Did you know that Sergeant Calhoun was originally going to be a man?
"Someone told me this yesterday, so I did know about it - but it didn't surprise me. I have a history of doing roles that are originally written for men. My role in The 40-Year-Old Virgin was originally a man. My agent was smart enough to ask the casting guys, 'Are you open to seeing a woman for this role of the doctor?' They said, 'Yeah.' And then they would feel like they're being casting geniuses by casting me. I got a lot of those roles. In fact, my first ever role was the king in The Princess and the Pea."
What do you like about animation as opposed to live-action projects?
"I like the obvious differences. The fact that you don't have to wear make-up and you don't have to dress up for the role is great. It's just you and a guy in a dark room, which is always fun. You're left to your imagination. I like that."
How many voiceover roles have you tackled in the past?
"I did voice work for many years before I started having success as an actress. It was mostly radio and television voiceover work, but I know my way around the studio. I know how to use the cappuccino machines and the headphones. For me, this felt like coming home but in triumph because breaking through to animation is really hard if you are just a work-a-day actor. They always want celebrities."
Did you have recording sessions with any other actors from the movie?
"I basically recorded my voice alone in the booth, although I worked with Jack McBrayer one day and I also worked with John C Reilly one day. I know John worked with Sarah a lot, and you can hear it in the movie. It sounds like they're in the same room; it's terrific. You know what? I loved it when we got to improvise during our sessions."
In a recent interview, John C Reilly hinted that he'd love to work on Glee. What do you think of that?
"I love it! He has the same hair as Will, so I'm sure he could play his crazy uncle John. That would be great. I love that there are all these macho guy actors out there that have secret desires to be on Glee. Ryan Murphy directed Javier Bardem in Eat Pray Love where Javier pulled him aside and said, 'I have an idea for a character for Glee.' He wanted to play Sue's boyfriend, so there is the possibility that Javier could be the unnamed celebrity father of her child on the show."
Since we get to watch you on television every week, what's on your small screen must-see list?
"I love Modern Family, Episodes, Mad Men, Homeland and Girls. I really love Girls. And, of course, Glee."
Do you have any guilty pleasures when it comes to reality television?
"I don't feel guilty about it, but I love What Not To Wear. However, I'm not really a reality TV person; I get nothing out of it. Saying that, we watched one episode of the Kardashians on vacation recently - and that led to a marathon. It was a beautiful day outside, but we stayed in the hotel room where we were transfixed by the Kardashians. That show can run for hours, but we all felt so dirty afterwards."
What are your favourite animations?
"I think there is a lot of great animation out there. I love The Simpsons. I love Family Guy. I love Phineas And Ferb. I also love the Disney classics, but The Aristocats is probably my favourite. I also loved watching The Wonderful World Of Disney on Sunday nights when I was growing up."
Do you tune into Glee every week?
"Sure, I watch Glee. My daughter loves it, so it's a big deal in our home."
What does your family think of Wreck-It Ralph?
"My wife loves it. We both went to a screening before it was released and I kept saying, 'God, I look so good.' She kept reminding me that it's animated. But my daughter is going to love it. My daughter is blasé about me being on TV because it's normal for her now. But when I came home with my Sergeant Calhoun action figure, she ran down the stairs yelling, 'Let me see it. Let me see it.' She was really excited about that."
If Sue Sylvester could perform any classic Disney song on Glee, what would she perform?
"Mary Poppins is Disney, so I'd pick A Spoonful of Sugar for Sue. She'd be drugging all the Cheerios and making everyone take steroids! [Starts singing…] 'Just a spoonful of sugar helps the steroids go down...' Marvellous!"
Wreck-It Ralph is released in UK cinemas on February 8.