Tig Notaro describes the experience of witnessing a friend’s final moments

<p>Comedian Tig Notaro recently witnessed the death of her friend, poet Andrea Gibson, after a years-long battle with cancer. Being by Andrea's bedside was a profound experience for Tig and she talks about its impact on her in this moving and at times funny conversation. For more of “All There Is with Anderson Cooper” visit <a href="http://cnn.com/allthereis">cnn.com/allthereis</a></p>