The ABC network broadcast the third installment of its Nightline Face-Off series on March 26, 2009. The debate on the topic, Does Satan Exist? was recorded at Mars Hill Church in Seattle, WA on March 20, 2009.
On one side of the debate is Deepak Chopra and Bishop Carlton Pearson. They argue that Satan does not exist. On the other side is Pastor Mark Driscoll and Annie Lobert who argue that the devil does exist. More about the debate and the participants from ABC News: http://abcnews.go.com/Nightline/story?id=7170007&page=1
The debate series is viewable online at http://abcnews.go.com/nightline/faceoff.
Also, The Washington Post and Newsweek featured a conversation on the same topic in its March 25, 2009 online issue of On Faith: http://newsweek.washingtonpost.com/onfaith/2009/03/does_satan_exist/all.html.
According to scripture, Jesus Christ came to destroy the works of Satan (I John 3:8). To deny the existence of the devil is to deny the work of the Christ.