Six seasons in and ‘The Big Bang Theory’ is more popular than ever. Actress Kaley Cuoco attributes part of the show’s success to its syndication. She also talks about whether her character Penny will ever find long-term happiness with Leonard.

Kaley Cuoco visits David Letterman on September 25, 2012.

The cast of “The Big Bang Theory” answers fan questions from Twitter with Entertainment Weekly magazine.

Promo for the new Thursday night comedy line-up on CBS.

Promo for the 2012 CBS Premiere Week.

Kaley Cuoco visits Chelsea Handler to talk about her new movie Drew Peterson Untouchable (2012) and hosting the 2012 Peoples Choice Awards.

Kaley Cuoco visits The Talk on January 9, 2012 to talk about the Peoples Choice Awards.

Kaley Cuoco was on Conan on October 17, 2001 and talked about her tattoo, her naked photo and dating.

Kaley Cuoco visits Ellen on October 13, 2011.

Kaley Cuoco makes an appearance on Live! with Regis & Kelly on October 4, 2011.