There is a wonderful post at STR concerning Hitchens' recent book and debate about religion and the existence of God. If you don't know, Hitchens' book is God is Not Great, and is the latest is a string of anti-Christian books. (A wonderful pastor who has engaged him in debate blogs here.)
One of Hitchens' claims, as Melinda notes at STR, dates back to Hume--extrodinary evidence is needed for the "extrodinary" claims of Scripture. The implication is that the evidence required to support Scriptual claims cannot be produced. STR quotes a former philosophy professor of mine (Dr. Gary DeWeese) dealing with Hitchens' remark. It is worth a careful read.