Call of Duty: Black Ops. Sure, Modern Warfare 2 wins if you're looking at the numbers, but anyone familiar with Halo 3's excellent Forge and Theater modes knows they should expect more from the top franchise in multiplayer gaming.
This "multiplayer teaser" doesn't reveal much, but here's what we spotted: remote-detonated RC cars; a "ballistic" knife; and, most notably, a video recording and editing feature. Pore over the roughly 90-second video and let us know what you spot. Expect a "full multiplayer reveal" on September 1.