Mine would have to be the scene which starts of the level in Halo 3 "The Ark".
Nothing says "badass" more than having the Elite ships engage the Brute ships whilst the humans drop onto the Ark.
-
From the games? Well... [quote]To give the Covenant back their bomb.[/quote] Overall though... [quote]Die? Didn't you know? ...Spartans never die.[/quote]