CNN's Fredricka Whitfield interviewed comedian Joan Rivers over the weekend and Rivers' reaction has gone viral. She took her mic off and walked out mid-interview. Well, this isn't the first time it's happened at CNN or HLN. Take a look at these other memorable guests who decided they had somewhere else they wanted to be. For more information please visit http://www.hlntv.com/video/2014/07/07/when-guests-walk-off-set