Former Defense Secretary Rumsfeld Lied to Ray about Iraq in front of C-SPAN & CNN on May 4, 2006.  Citing “what happened recently” to Ray in the Senate, a friend re-uploaded the video linked below; it includes John Stewart’s hilarious take on the Rumsfeld-McGovern mini-debate.

Ray’s quizzed Rumsfeld for four minutes during the Q & A after a Rumsfeld speech in Atlanta.  The exchange was captured and featured that evening by Keith Olbermann who, happily, did due diligence with fact-check.
https://www.youtube.com/watch?v=v1FTmuhynaw  (5 minutes)