The Big Bang Theory (2007-2019), one of the longest studio sitcoms in history was on air for the last time on May 16, 2019.
The Big Bang Theory creator Chuck Lorre and former WB TV chair Peter Roth discuss Kaley Cuoco's Penny and not doing right by her early on.
On The Official Big Bang Theory Podcast, Chuck Lorre said that Kaley Cuoco's Penny wasn't fully developed in the earlier seasons of the show.