The Big Bang Theory has never been perfect. It is, after all, a Chuck Lorre production. Despite that unfortunate set up, and its completely overdone premise (nerds meet hot girl, social awkwardness ensues!), I have largely enjoyed much of the series. Big Bang has shown a variety of interesting and nuanced relationships between its characters, punctuated by the occasional joke that crosses the line (often related to fatness, queerness or gender essentialism).