'Big Bang Theory' cast explains four-year success at PaleyFest

• Tweet

While appearing at PaleyFest on Wednesday night, the production team and cast from "The Big Bang Theory" joked as they celebrated the late-coming success of their show.

Even though "Big Bang" is currently the second most-watched show on television, this wasn't always the case. In fact, when the sitcom made its debut at the PaleyFest in 2009 it didn't even place in the domestic top 40 category, the Examiner reported. The cast and crew thank syndication for the significant increase in viewership.

When local stations and cable networks began airing re-runs of the show in 2011, it was hard to turn on the TV and not catch en episode of "Big Bang" playing. Slowly but surely the show built up a loyal fan base that currently brings more than 20 million viewers per episode and turned the show into the most coveted TV spot for advertisers.

Jim Parsons, who plays genius Sheldon Cooper on the show, still has a hard time grasping the show's popularity.

Co-creators Chuck Lorre and Bill Prady, who also attended PaleyFest, looked to keep the audience intrigued by hinting to an upcoming plot-twist without giving too much away.