I can't really remember, but I think I heard about it somewhere in the Bay 12 forums.
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And like the baseless fabric of this vision, the cloud-capped towers, the gorgeous palaces, the solemn temples, the giant Screen itself, all of which we inherit shall dissolve. And, like an insubstantial pageant faded, leave not a byte behind.
VGcats first, but I couldn't find out what the hell he based his comic on. Till Penny Arcade showed me the way. Their updates are always way more informative. VGcats updates are sloppy as hell these days. I saw the comic, and was scanning through all of the BS on the main page. Not once did he say "This is Minecraft. Go play it." or make any mention of what the comic was based off of.
Discuss
*ahem*
So... Yeah. Penny Arcade.