Jim Parsons on "Big Bang" Sitcom Mania

Jim Parsons won an Emmy this year for his work on CBS's hit comedy "The Big Bang Theory." But unlike the brilliant, socially inept physicist he plays on the show, Parsons hasn't let it go to his head.

Parsons sat down with "Early Show" co-anchor Harry Smith to discuss how his role has evolved since the show's inception three years ago.

So has Parsons changed since he's won an Emmy?

"Do I look different?" he said.

"You seem different," Smith joked.

"Have I become callus and rude to you?" Parsons said.

"The Big Bang Theory" has moved to Thursday nights, so what's Parson's take on the new time slot?

"Ooh I had some abject fear. Because I'm a human being, and change is never fun for a human being. But I kind of bit my lip. Honestly, we've been moved four different times since we've been on the air. And three time slot changes and now a night change. But two things, number one, every move made with us has worked out for the better for getting more eyes to the show. And the second thing is, it was very exciting to me, as a child of the '80s, raised on Thursday night sitcoms," he said.

"You are Cosby," Smith said.

"I prefer Alex P. Keaton (from "Family Ties"). But that's just me!" Parsons joked.

Thinking back to where the show started -- it really was not a "big bang" per se.

"No, I always say we were very healthy. We were very lucky that we never went to work feeling like we were on the chopping block of cancellation. The ratings were healthy. But it grew in a very steady rise for the next three years it's been. And I really think it's benefited us. It let us really find a grounding as a cast, just doing our jobs without a bunch of fanfare," he explained.

With time on their side, the cast was able to really nail down the voices for the characters.

"Exactly. So now, when some bigger times have hit, luckily, audience-wise, we're more grounded in the show," he said. "And the other thing that's good, is the way the show built had a lot to do with word of mouth. They just did that whole gossip segment. And it's exactly like that. You know, spreading good news from one person to the other about the show. And that's how it built as much as anything."

Fifteen million people later... not too shabby of an audience!

Since winning an Emmy, Parsons wanted to pay it forward, so he participated in the Stand Up for Cancer, a fundrasier for cancer research.

He answered phones and thanked people for donating money to the cause.

"I would say 'hello...and I said it's Jim Parsons. Who?' And I would say from 'Big Bang Theory.' Oh, I've heard of that, never watched it.' This happened maybe four or five times. Then the last call I got was, someone who didn't know who I was and said, 'is Fran Drescher by you?' And I said, 'I don't know where Fran is, I'm very sorry and thank you for your donation.' So you do what you can," he said.

But all that is changing as time goes on and the show continues its success.

Now there's a possible romance on the horizon for Sheldon with Mayim Bialik. But will there be another woman coming onto the scene? Could be a love triangle?

"Oh, my god I hope not. I can barely deal with the one we have!" he said. "No, you know, the whole thing that's gone on with Mayim and that character has been fun to explore because -- will Sheldon be able to have a romantic relationship? And I still don't know if he will. I still don't know if he's having one. He says that he's not. And having not read scripts beforehand I don't know where it's headed."

Is Sheldon in denial? Perhaps there's more depth to these feelings than he's aware of?

Like his fans, Parsons is intrigued to see his character's layers unravel.

"We'll tune in," Smith said.

"Did I blow your 'Early' morning mind?" Parsons joked.

"We're tuning in. No question," Smith added.

You can catch the "The Big Bang Theory" on Thursday nights at 8/7 central.