Here is list of my favorite t-shirt designs from Threadless. I have made it in two categories - already sold out t-shirts with absolutely amazing design (there is always hope for reprint) and great t-shirts that you are able to buy.

Threadless, I think, is one of most amazing social community right now. It is t-shirt design competition/store with over 300,000 users signed up and new tee shirt designs every week.