Today, I ordered my first t-shirt at Qwertee
(this one for the curious) and I have seen that there is a t-shirt design contest, here is a particulary cool one that you should like, vote and order soon if it passes in production:
Pac to the Future
Come on big boy, you know you want me... 
By the way, where do you buy your geek t-shirts? I was at the FACTS fair in Genk last week-end, and most of the resellers displayed no less than 25€ per t-shirt, it's damn too expensive for what it is!
EDIT:
dude, I reeeeaaaaaaly hope they will print this one too:
