Shielded dead Elite

To see a Dead Shielded Elite, you must play Halo: Combat Evolved, where there is a glitch that allows you to see an Elite's shield, even when it is dead.

To do this, start any level and play through it on Normal difficulty, until you reach an Elite. Do not attack him, instead, wait until you get behind him, then beat him in the back, so that he'll instantly die. Now that you've done that, shoot his corpse. It should flicker like the Elite is alive. This works with all types of Elites, even Zealots. It doesn't work in Halo 2 or Halo 3 though.

The easiest way to see this glitch is to start The Pillar of Autumn (Legendary or Heroic so that you skip the training) and play until after you clear out the cafeteria. You will reach a hallways with an Elite shooting at a pair of Marines, simply assasinate him and then fire at his dead corpse.