Frequently political videos don't reveal their sources and thus are little better than propaganda. Often video is more entertaining and more interesting, but still needs to list sources so viewers can evaluate the truth. Entertainment and honesty in journalism need not be mutually exclusive. A recent one connecting the iPod with attacking the Republican congress fortunately at least tries to, unfortunately not using the best sources.
Similarly O'Reilly rightly corrects Jon Stewart for clearly taking one of his statements out of context.
Update: Stewart responds, O'Reilly edits it out.