Bungie's latest Halo 3 update introduces a rather intriguing new function bound to the back button of the Xbox 360 pad. It sounds excellent.
Or rather, it'll refine the excellence of sound - by eliminating the sort of "vocal buttmunches" who help ensure the truth of the following equation: "Teenagers, plus anonymity, plus microphone = idiot."
The "A-Hole Button" as they're calling it brings up a score list with everyone's tag on it. By using the right stick, you can quickly select whichever player is smack-talking you into a stupor, and you won't hear from them again.