Fun With Threadless
This might be a well-known one already, but I figured I'd post this for all those who don't know about Threadless. Threadless is a website which allows anyone to upload his/her designs for t-shirts and then Threadless actually prints the shirts and sells them. I think it's a pretty clever idea and this way you get to wear artwork you probably have never found if not for that site. There's a variety of designs and this also ensures that you probably won't be wearing the same shirt as everyone else around you, which is always a plus. Check out some of the designs that I liked:
Browse the site though. There's a lot more.