Mark Driscoll is the teaching pastor for Seattle's Mars Hill Church (not to be confused with Rob Bell's church of the same name in Michigan). A Google search of Driscoll's name makes it easy to find critics. Theological conservatives don't like his non-traditional methods, while liberals don't like his strict adherence to the bible as the final answer on everything.
ABC's Nightline did a special in which they invited Driscoll and 3 others to debate the question: "Does Satan exist?". View the entire episode (including parts that were cut from the broadcast) here: http://abcnews.go.com/nightline/faceoff
I learned about this event after the show had been broadcast. I read about it in a religion blog where the writer complained that the 4 panelists were not intellectual enough. I couldn't disagree with him more. Driscoll in particular laid out the basics of the Gospel very well in his introduction, and made it clear why the existence of Satan is an important part of the need for Jesus to do what He did.