Joan Rivers always called Johnny Carson her mentor, who made her a frequent guest on "The Tonight Show." When Joan was tapped to become the first woman to host a late night talk show, the two comedy legends became rivals. Gary Tuchman looks back at their complicated relationship.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
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