He reported the death of John F. Kennedy, made Richard Nixon squirm over Watergate and helped show the world a myriad of abuses perpetrated by U.S. soldiers at Iraq's infamous Abu Ghraib prison. But as Dan Rather prepares to leave the top anchor chair at CBS News in March, he is more likely to be remembered for a series of controversial memos whose validity he was never able to prove. Rather didn't mention his controversial 60 Minutes story in the announcement that he would leave the CBS Evening News on March 9, 2005 - his 24th anniversary as the network's...