Some of the most awesome TF2 movie-making stuff: greenscreen map & greenscreen HUD. You can download them here!

See them in action: HUD in “Insanity” & Greenscreen map in “Demoman vs 3DS” or “OH YEAH”.
Or just watch them both in action at once in “Real Life Fortress: Airshot”.

Downloads:
Greenscreen map
Greenscreen HUD

Thanks to broesel for the HUD!