very easy to follow and concise video tutorial kat, and impressive results from the heightmap. i'd previously not used the angle based edge split on terrain, so again cool to see that being put to good use.
does the smooth group shading always get exported with the mesh, for example when using .ase format? and do most game engines support the double verts produced by the edge split modifier being applied to the mesh?
edit: i might of posted this in the wrong forum section, so feel free to move it if you want my friend.