Kenneth D. Lewis There are many ways to view Kenneth Lewis’ eight-year reign as Bank of America Corp. (NYSE: BAC) chief executive, but two seem to hold the most landscape.

On one hand, the $130 billion he spent on acquisitions – FleetBoston Financial Corp., MBNA Corp., LaSalle Bank Corp., Countrywide Financial Corp., Charles Schwab Corp.’s (Nasdaq: SCHW) U.S. Trust private banking unit and Merrill Lynch – that more than tripled the size of Bank of America, making it the largest U.S. lender both by assets and deposits.

On the other, his open-wallet policy and the example it set forth almost perfectly encapsulates the boom, bust and nascent rebound of the U.S. housing and banking crisis – which later became the financial plague that devastated markets all over the world.

In the second half of 2007, the extent of the U.S. housing crisis began to crystallize when Countrywide’s freewheeling