Up for bid on eBay is the official Blizzcon Diablo III poster signed by Diablo III development team at Blizzcon 2011.
The seller says, "The line to buy this poster was about 1 hours and 30 min long and on top of that, I had to line up more than an hours to get those autographs. This poster was sold only at the Blizzcon 2011 convention hall and will never be on sale again."
No line here. Just click the link provided above and place your winning bid. Good luck.