Given that this was released nine years ago, and I still fondly recall it as my favorite commercial of all time, here is a one-minute trailer for the original Gears of War. By today's standards, the movement looks quite choppy and a bit too unrealistic in places (yikes, those explosions). However, I remember when I first downloaded this on my Xbox 360, and still get a bit of the same excited apocalyptic feeling when I watch it now that it incited way back then.
Maybe I just really love the song (I did in Donnie Darko too), and it's pairing with silent-but-violent action, but whoever put this thing together for Microsoft back in the day, kudos to you. The games were pretty decent too, but I'm not sure they'll make it into a one-day-upcoming post on my favorite video games of all time.