"Big Bang Theory" season 8 spoilers are here and the showrunner weighed in on Sheldon acting like a hobo and how things should change after the season 7 finale. Meanwhile, Kaley Cuoco endorses "Friends" cast Lisa Kudrow to be Penny's mom.

Executive producer Steve Molaro dished out "Big Bang Theory" season 8 spoilers to Breathecast when he said that Sheldon leaving Cal Tech will lay down the groundwork for them to do something new.

"As of now, he is off riding the rails like a hobo," he said. "We thought it would be interesting to take an episode and sort of systematically chip away at Sheldon and break him down to the point where he just needed to leave to process everything.

Don't expect Jim Parsons to reveal some "Big Bang Theory" season 8 spoilers however as he told TVLine's "Ask Ausiello" that he has nothing to reveal because "nobody will tell me. I don't know if they know yet. They may know, but I really don't know if they do."

TVLine also suggested that Sheldon probably didn't climb on board the train, to which Jim Parsons replied: "I never thought of that, but you're right - he could show back up at home immediately, couldn't he?"

Meanwhile, Kaley Cuoco might have revealed some major "Big Bang Theory" season 8 spoilers when she opened up about casting Lisa Kudrow as Penny's mom.

When asked by TVLine if the producers of the show already picked up the actress to play her character's mom, she started off by saying that she doesn't know what they are going to do.

"But I have always thought - and I hope this doesn't offend her because I know she's super young, though we know Penny's mom got knocked up very early-- that Lisa Kudrow would be so perfect. I've said that for years. I think it would be hilarious, plus I'm a huge fan of hers, so it's a selfish wish," she said.

"The Big Bang Theory" is confirmed to be aired on March 12, 2014.