James Corden takes "The Late Late Show" center stage

In the next evolution of late night comedy, James Corden will take the stage as the new host of "The Late Late Show" on CBS. Correspondent Anthony Mason reports from behind the scenes with the star, who is staying humble.

Corden went into CBS to pitch an idea for a sitcom, and walked out with a late night talk show. The British actor, who succeeds Craig Ferguson as host, will be the first to tell you he's totally unqualified.

"However shocked people at home are going to be by the fact that I've been chosen to host this show, none of them will be as shocked as I am," Corden said.

Corden is still getting acclimated to his new office.

"It's a bit dark but this is where our bands will be," Corden said on stage. "And this is where I'll come from. So on Monday night, this is where I'll be, you know, throwing up on my clothes."

At "The Late Late Show" studio at television city in Los Angeles, Corden has been doing test shows all week.

Anthony Mason got the chance to sit in as his first TV guest and discuss the new gig.

"It's different than everything I've ever done," Corden said. "I've never done this. I don't even really know what I'm about to do. I'm talking like I have any authority on this. I know nothing."

A household name in Britain with nearly 5 million Twitter followers, the 36 year old British actor most recently starred in the films "Into the Woods" and "Begin Again."

Although Corden is a comic actor, he was never a stand-up comedian. "It's not something I've ever done, really," Corden said. "I like being funny, but I don't really write jokes, as it were."

But will he do a monologue?

"We're gonna come out and do something funny and say something funny," Corden said. "And some nights, if we've got great jokes, then we will. I hope the greatest thing people could say about the show is that they don't know what it will be tonight."

Whatever they say, Corden will be ready. After breaking through in his 20's in the Alan Bennett drama "The History Boys" and co-writing and starring in the smash British comedy "Gavin & Stacey," Corden's next film and series were demolished by the critics there.

"I mean, you can't take anything without making mistakes, is the truth," Corden said. "And I'm very grateful for those misses I've had in my career at home, because you learn so much more from them than you ever do from the hits. You learn that you really have to work hard, which I wasn't really doing at that time. You sort of think 'I've cracked it, I'm doing it.'And you start to think perhaps you're more of a dude than you really are."

Corden would make his comeback on stage, in the comedy "One Man, Two Guvnors." The highlight of his career, he says, was the night it opened on Broadway with his parents in the audience.

"That night in New York, I remember thinking, 'I can't imagine what this feels like for my parents,"' Corden said. "Because I can't imagine as a parent what it would feel like to see my son or daughter being received by this city in such a way. And I'll never, ever forget it."

Corden ended up winning a Tony for his performance, beating out Phillip Seymour Hoffman, Frank Langella, John Lithgow and James Earl Jones.

"That Tony and all those awards that I won in New York at that time, they sit pride of place -- well, they used to sit pride of my place in my house in London," Corden said. "They're now in a storage container in a warehouse in London somewhere."

Corden moved to Los Angeles with his wife, Julia, and his two young children in January.

Corden has been a game show host in Britain, in films, on Broadway, and is now hosting a talk show, but more than anything, he considers himself an actor.

"Is anybody born to be a talk show host? Probably not; we're all acting, aren't we? Corden said. "It's not like I think, 'Oh, I'm a talk show host now so I'm no longer an actor.' We're all pretending. We're all just trying not to have a proper job."

The premiere of "The Late Late Show" with James Corden airs Monday night at 12:35/11:35C, right after "The Late Show With David Letterman,"on CBS.