Since the first GOP debate, I have liked Cain, but after watching this interview, I knew he was the man. Cain points out several times where O'Donnell had misquoted him or used one of his quotes out of context. One of the most notable times was when O'Donnell asked him if he was grateful for the government paying for his graduate degree while he was serving in the navy. To set the record strait, Cain explained that did not serve in the Navy, but he did work as a ballistic missile mathematician consultant for the Navy. Embarrassed, O'Donnell asked Cain why he should be Commander and Chief if he avoided service in the Vietnam war. Cain then made it clear that he did register for the draft, but that the Navy though he would be more helpful where he was. Believe me, that ticked O'Donnell off.
I encourage you to watch the video for yourself on Real Clear Politics.