Hackerstickers Clothing
   T-Shirts and hats for geek guys and girls.
   http://www.hackerstickers.com/products/geek-clothing.shtml

Load Rage
   Retro gaming designs.
   http://www.loadrage.com/

NTKmart
   Anarchic geek designs for those that Need To Know. UK-based.
   http://www.ntkmart.co.uk/

OffLine
   Featuring MMORPG, computer lifestyle, and fantasy shirts.
   http://www.offlinetshirts.com/

ShirtMonger.com
   Linux and classic video game designs.
   http://www.shirtmonger.com

SplitReason.com!
   Gamer and gamer logo products, t-shirts, Stikfas and Super Mario toys.
   http://www.splitreason.com/

SysWear
   Humorous computer-oriented t-shirts.
   http://www.syswear.com