Timeless Treasures is starting to corner the market in computer geek fabrics. I think everyone loved Smirk by Kyla May, with its Pac Man and Space Invaders prints. Next up, we have Mechanical Genius by Mo Bedell.
And, a couple cute novelty mini-collections:
Computer (an in-house collection)
Gumball Machines. OK, maybe not geeky per se, but maybe appealing to the same crowd.