Blind Skull

Thanks to The Gardner, we can now go and film in the campaign without any gun or HUD showing.
There is a skull you can pick up (an easter egg from Bungie!) that creates the result.

This MUST have been designed for machinima...?

See: http://www.cheatplanet.com/xbcheats/halo_2.htm
Scroll to "Blind Skull"

Thanks to the G-man!