Penelope "Penny" Hofstadter is a fictional character from the American CBS sitcom The Big Bang Theory, portrayed by actress Kaley Cuoco. She is the primary female character in the series, befriending her neighbors Leonard Hofstadter and Sheldon Cooper, two physicists employed at the California Institute of Technology (Caltech).

"The Convention Conundrum" is the 14th episode of the seventh season of the U.S. sitcom The Big Bang Theory and the 149th episode of the show overall. It first aired on CBS on January 30, 2014.