This is part one of John Stott's three-part series on the integrated Christian. Stott does a tremendous job in articulating the depth and breadth of our integrity in Christ.
http://www.allsouls.org/Media/PlayMedia.aspx?download=file&media_id=51728&file_id=53916
More of John Stott's sermons can be found on the following page. Another excellent series (soon to be posted) is called, "Who is this Jesus?"