Both of these first two videos are on the longer side, but both are powerful and hillarious. Both involve Jon Stewart. If you only have time for one of these, the 2nd video is much more poignant.
The first video is the Daily Show making fun of CNN because it fact-checked a Saturday Night Live sketch, but does a poorer job fact checking its own reporters.
This second video is when Jon Stewart went on the show Crossfire a few years back. Do not give up on this video, watch the full thing. Its awesome till the 10th minute. It gets a little slow around the 10:00-12:00 minute mark, but he throws a zinger around 12:30.
And this is his follow-up to his crossfire experience.