Unity3d
From John Freier
Unity 3D
2D Information
Camera
Change camera mode for Projection from Perspective(2 eye camera, so the sides will show) to Orthographic (1 eye camera).
Complete 2D View
Reference http://docs.unity3d.com/Documentation/Components/class-Camera.html
YouTube Videos
Unity 2D Game Tutorial - Part 1 Sprites and You. http://www.youtube.com/watch?v=DZucUpZtg2U