By Lynette Rice
January 31, 2019 at 12:49 PM EST
The Big Bang Theory
Credit: Sonja Flemming/CBS via Getty Images

Those fans of The Big Bang Theory are everywhere.

In today's installment of The Ellen DeGeneres Show, some of the cast members admitted that convicts – aka their "extended family," says a proud Kaley Cuoco – have dropped them a line or two about the hit sitcom that will end its run this spring on CBS.

"We do get a lot of letters from prison," admits Cuoco, who plays Penny.

"If I was in prison, I would write," adds Johnny Galecki, who depicts Penny's husband, Leonard.

"When the return address says Riker's Island, you don't have to open it," retorts Simon Helberg (Howard), who was joined on and around the Ellen couch by Jim Parsons (Sheldon), Melissa Rauch (Bernadette) and Mayim Bialik (Amy).

All of this discussion about their unusual fanbase seems to puzzle Kunal Nayyar, who plays Raj. "I don't think I know one Indian in prison," he tells Ellen DeGeneres. "I get a lot of letters from accountants."

The cast, which gathered for the first talk show interview since announcing it was their final season of TBBT, also reflected on how the comedy is helping to create new scientists with their scholarship announcement at UCLA.

For EW's recent cover story, Cuoco, Parsons, and Galecki revealed how they would like the sitcom to end after 12 seasons. "The elevator, definitely. That's one of my wishes for the final episode," says Parsons. "The elevator gets fixed, at least for a minute, and then we all get stuck in it."

"It would be a great show ending for me!" adds Cuoco.

Galecki just hopes the final episode includes lots of emotional moments, because "none of us are going to be able to keep from crying during the last taping. We've got to justify it in the writing somehow."

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