Neil deGrasse Tyson "responds" to William Lane Craig

I don't own any of the material in this video, which can be found at the following links: Craig:    • [official] The Absurdity of Life Without G...   Tyson:    • Neil DeGrasse Tyson - Greatest Sermon Ever   1st Clip is Old Yeller (1957), property of Walt Disney Productions 2nd Clip is Monty Python and the Holy Grail (1975) Property of Michael White Productions, National Film Trustee Company, and Python (Monty) Pictures 3rd Clip is from http://www.eso.org/public/ The music used is Lady of Dreams, by VAST http://www.realvast.com/