When did Heroes jump the shark? At what point did Person of Interest find its footing? The site Graph TV charts out the popular opinion of each episode of each television show.

Kevin Wu created Graph TV, which charts the IMDB rankings of each TV episode, creating graphs of how viewers have felt about the quality of a series throughout its run. You can head over to the site and see the graphs for even more shows. Which charts do you agree with? Which ones are completely off the mark?

[Graph TV via On the Media]