Glenn Jones, perhaps better known as Glennz in the Threadless community, has taken his unprinted Threadless designs (and new work, too, I imagine) and started his own online t-shirt shop: Glennz Tees. Check out his blog to see all of his designs, including his work selected for printing by Threadless.
Glenn’s t-shirt work — a celebration of visual gags — is consistently clever, cleanly executed, and his knack for taking advantage of the medium’s limited colour options is remarkable.