Flying Half-Jaw

In Halo 2 on the level The Oracle (just after the level The Arbiter) when you first encounter the Flood, it is possible to make "Half-Jaw" fly in the air anytime he is attacked by an Infection form.

To do this, you must make him your enemy at the very beginning of the level.

This is simply done by killing everyone on your team (both Elites and both Grunts), which are with you at the start of the level. Defend yourself from the invincible Elite Commander until the Heretic Leader's hologram appears.

At this point, Half-Jaw will become an ally again, talk to the hologram and help you fight the Flood that soon attack. Whenever an infection form jumps onto him, he will attempt to hit it with his Energy Sword. After a couple of strikes, he will fly through the air.