In one of our final classes we discussed mock news shows such as The Daily Show with Jon Stewart and decided that they are info-tainment. They provide the information in an entertaining manner.
While perusing the politico website, I encountered a part of their website called "Politico Playback." In these videos, the politico staff comb through all the various late night info-tainment shows and highlight the most pertinent parts of the shows that are of interest to the visitors of politico.com. The clips are politics related and highlight what these late night comedians have to say about current political events and politicians.
The fact that a political website has a section devoted to clips from info-tainment news shows that they have an impact on the country as a whole and are deemed significant enough to watch by the people who frequent politico.