In the following video, Motley Fool financials analyst David Hanson takes a look at Warren Buffett's favorite bank, Wells Fargo (WFC -1.41%), and tells investors that even though it's trading at a P/TBV ratio of 1.7, expensive compared to Bank of America's (BAC -0.74%) 1 and Citigroup's (C -0.93%) 0.9, David still sees Wells Fargo as cheap historically, and with room to run ahead of it. He discusses Wells' banking practices and unique philosophy that have allowed it to weather the financial crisis in much better shape compared to its peers, and tells us why its under-the-radar investment banking operations may mean this strong banking stock with an industry-beating dividend still has big upside ahead.