Also, you have to check out GSS's new website. It's exactly the site I wanted to build for Pre_Shrunk but just never got around to it (needing to host the site on an ASP/SQL server didn't help).
A full database of the band's gig history including setlists, photos and reviews AND the ability for fans to add more info by logging in and uploading images or reviews. Awesome.
Faith No More / Mr Bungle have a similar fan-built (unofficial) database of gigs/photos/articles at www.cv.org/database/.
A T-Shirt with the number and 'you know what it's for' would be cool.