The 3 Point Shader and xoliulshader

 I thought I should post this as these shaders are great allowing you to view your models with Diffuse, Normal Specular, Gloss and Normal maps in your viewport !

 This is great as you can preview your models on  how they will look in a game engine great for previews or screen captures for your portfolio shots saving the time of exporting to an engine like Unreal or such. Check out the sites for the free downloads or get the full featured versions.

http://www.3pointstudios.com/3pointshader_about.shtml

http://xoliulshader.com/