I don't think I have seen a link to Chicagos' own Rat Patrol:
http://rat-patrol.org
I see some of these guys all over my neighborhood. They have a great site too.
You can buy some prebuilt lowriders and customs here:
http://www.lovelylowrider.com
They have some cool bikes with the old school flavor. If I weren't so tall I'd get myself one.
I really dig the spinners:
mms://media.bicycledesigner.com/bicycledesigner/Spinner_Bike_broadband.wmv