Is there a way for one side of a face to have one texture, and the other side to have another? Like a playing card?
A question that comes up regularly. The Geometry node: http://www.blender.org/development/release-logs/blender-246/shading-nodes/
or you can make two faces really close to each other with their normals facing out. Usually Richard’s solution is the one to use if you have any complexity in your geometry.