On level 5 right at the end of the level as you go through the final doors where the game ends if you have a rocket launcher you can shoot the door as the screen goes white (meaning the level is done) the blast will kill the master chief but the video will continue. As the video plays you wont see the master chief moving. All you see if the spot where he should be (had he not died) and his voice. If your lucky there will be a shot where the camera goes in behind cortona you will see the spot where the master chief should be and you might be able to see your dead body in the background.
When I played I shot the door as it opened the movie continued and I was lucky enough to see my body in the background planted in the floor on a angle. It was hilarious. Try it youself
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