The GREEDO NEVER FIRED shirt is now available at dave.threadless.com. So wether you are a fan of the blog or just another Lucas hater, head over there and have a look.
(by the way its been available since long before HAN SHOT FIRST. Which is a lame slogan when you think about it... How could Han have shot FIRST if GREEDO NEVER FIRED!)
There's a few other gems there as well so poke around a bit.