Their Orange County/Tustin location is the only one left in California, apparently. I built my "graduation present" PC with parts from there in 2008. They've apparently got about 2 dozen locations around the country, along with the web store.
Their design aesthetic kind of looks like they did, what with the weird grey stucco and the blue and white blocky font.
In Texas, each microcenter has their own theme. It's actually pretty cool! One is a space station. Another is an oil field :-)