T-shirts are walking vector art galleries
Very few do it better than Threadless. They seem to be a magnetic source for some of the best vector illustrators around and their success is no doubt magnified by the customers who gobble up these cotton billboards.
Take a closer look at Threadlesss
If you want to see what a decade of t-shirt design genius looks like, pick up the Threadless Book. It makes an excellent addition to your design library and a terrific gift for that person who has it all. Check it out: