Lucas Licata demonstrates a simple technique for getting wireframe renders from Mental Ray in Maya showing how to get an interesting look of wireframes in conjunction with a clay style render.
In this video we look at Contour Rendering with Mental ray over an Ambient Occlusion pass in Maya 2013 to get a wireframe render
Lucas uses the Mental Ray Counter Shader for creating the wire frame look, and places them over an Ambient Occlusion pass, which is a great way to display models for demo reels or just an interesting way to get a unique look from a low poly render.