Episode 13 in Nuke for 3D Artists show in its most basic form how to set up a simple camera projection onto low resolution geometry inside of Nuke. In future Episodes, we shall be showing more complex examples.
Episode 12 in Nuke for 3D artists covers how a 2nd way to deal With anamorphic footage or renders in nuke, that is a better way when you have an EXR with multiple render passes.