I screen capped the final battle in Fallout 3 when you follow the robot to the water plant. I turned off the HUD so I could treat it as footage.
I used the Blender internal renderer to relight these frames from the final battle scene by changing the color of a Sun lamp. No nodes or compositing used.
I captured it into a DivX video and brought the video into a plane using Images To Planes script. It was nice to see that Blender can read DivX AVI files. I had never tested that.