The Big Bang Theory’s Johnny Galecki says there are many more stories to tell on the show after a seventh series was commissioned.

The 38-year-old actor, who plays science nerd Leonard Hofstadter on the E4 comedy, admitted at an Emmy panel for TV Academy members that the show could be headed to ‘legendary’ status, following its renewal for a seventh series, according to The Hollywood Reporter.

“When you hear something like season seven, that puts it in a very surreal perspective. Shows that get that opportunity are those iconic, legendary shows,” he said.

Johnny, who previously starred in the long-running comedy Roseanne, added: “I personally don’t feel like we’ve told half the stories that these characters have to tell. It doesn’t feel to me like we’re halfway through. I’m certainly not done working with all of these people.”

His co-star Kaley Cuoco, who portrays his screen girlfriend Penny, said the cast and crew appreciate the show’s success. The Big Bang Theory, which was created by Chuck Lorre and Bill Prady, received eight Emmy nominations this year.

“We have an understanding of how special this is and we know it doesn’t come a million times in your lifetime. Each one of us sitting here knows that and feels that way. We talk about that and we’re very aware this is something extremely special. We take it really seriously and appreciate it,” she said.

Chuck said they have all ‘grown up and matured’ with the show over the six years since it began.

“We never imagined when we started that we’d have anything like what’s happening; the last couple years have been beyond our wildest dreams. We all feel as a group we’re doing our best work now,” he said.

The Big Bang Theory returns to US screens on September 26.