SFist commenter jacksevanroo's facetious reference to buying a geodesic dome in response to Larry Ellison's questionable tax break on his "functionally obsolete" compound, reminded us about this Silicon Valley geodesic dome home ("Brigadome") that went up for sale last month. If we could buy it, we would -- hippie stigma be damned! (Buckminster Fuller was the most under-rated genius of the 20th century, as far as we're concerned.) Located in the San Francisco peninsula foothills......