Who says we want to be happy? Judging by the box office and fall TV lineup, consumers would much rather wallow in despair.

Specifically, three TV post-apocalyptic TV shows are drawing in millions for Comcast (NASDAQ:CMCSA) via NBCUniversal with Revolution and the Syfy channel with Defiance. Time Warner (NYSE:TWX.DL) is getting a kick from TNT, which recently renewed the sci-fi hit Falling Skies for a fourth season.

The following slideshow takes a look at each of these franchises and four other forthcoming shows looking to profit from the runaway success of The Walking Dead.

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