If you have been considering bankruptcy, you might be dealing with a guilty conscience because you are going to eliminate a few thousand dollars of debt. If you are, you might feel better after you take a look at 10 bankruptcies that went down in history as the biggest ever. 10. Pacific Gas and Electric Co. Owed 36.1 Billion PG&E filed bankruptcy in 2001 after making some bad business decisions. They have since recovered and are again a leader in the industry.