There's good reason why the gently-updated houses built by midcentury stud Joseph Eichler, a California developer who churned out some 11,000 residences in the state's post-war boom, are followed with a cult-like intensity. The best of his designs are airy and awash with the omnipresent sunshine of the Golden State, essentially built representations of California's tanned midcentury, which somehow slid from the Rat Pack and Googie architecture to hippie paradise. Take, for example, this abode in San Rafael, on the market for $915K. The kitchen is wood-paneled, light-filled, and huge. The living room boasts walls of windows. The ceilings are beamed, the lighting is globular, and the front door is painted yellow.