This episode of American Life, Bad Bank, has some sobering statistics and explanations of the current banking crisis. Bank of America and Citigroup have 25% of US deposits. Top 20 banks have 90% of US deposits. Citigroup has balance sheet with 150 billion in assets, yet market cap is only 10 billion. Household debt to gdp chart has been 30-40% through 1940s and 1950s. It hit 50% in 1980s. It skyrocketed to 100%. The last time it was at 100%.... 1929 :-/ They also say that part of the reason the FDIC can't seize Citi or Bank of America is because they don't have a large enough staff.