Letterman, O'Reilly finally agree on something

Bill O'Reilly stopped by "Letterman" last night to promote his new book on the assassination of Abraham Lincoln. While the he was there, the two hosts got to chatting about current events. And though they didn't agree on everything, Bill and Dave found some common ground in their mutually held view that, in retrospect, the invasion of Iraq in 2003 was ill-advised. This led to what we imagine is one of the more awkward high-fives ever televised.