Note on spatial interpolation comparison by Tomislav Hengl on Day 5 of the GEOSTAT 2011 at the University Koblenz-Landau in Landau, Germany. See http://www.uni-koblenz-landau.de/landau/fb7/umweltwissenschaften/landscape-ecology/Teaching/geostat for a program overview and data for the exercises
If you download the videos and play them locally the quality (especially sound quality) may improve!
For general information on GEOSTAT courses visit http://geostat-course.org/