When cosplayer Joshua Smith decided to make a costume for BlizzCon, first he went to Wal-Mart then he went all out, building this massive, amazingly detailed Diablo costume in honor of the release of Diablo III.
There are lots of photos of this amazing costume at the link below, including shots of the suit lit up with a demonic glow. If I owned this costume, I would scare the crap out of my entire neighborhood on Halloween!
Link --via Destructoid