The minds over at Geek6 have devised this devilish chart to show the peaks and valleys of genre TV since the dawn of television.
According to Josh over at Geek Six:
"I've compiled a database of 1,000 sci-fi, fantasy and genre shows that have aired in the past 70 years. My first swing at parsing through some of the data yielded this. It tracks every show by year to see when sci-fi shows were huge, and then watches them topple as networks realized the allure of reality television."
Well done, Josh. Well done.