Which business moments were most memorable this past year? CNN lists several events that made industry insiders and consumers alike squirm, ranging from the all-encompassing debt ceiling debacle to the Netflix goof to Jon Corzine and the MF Global scandal. Other moments we'd all rather forget: S&P's mistaken downgrading of France's credit rating, retailer Kenneth Cole's insensitive Twitter notes about the connection between the uprisings in Cairo and its spring clothing line, and United's mistaken reinstatement of the two memorable flight numbers that crashed on Sept. 11, United 93 and United 175.