Commercial for Halo 3, aired on ESPN during Monday Night Football.

Gamespot.com

"On Dec. 4, the special 60-second "Halo 3" advertising spot will be broadcast, one time only, on ESPN's "Monday Night Football." The ad, created by advertising agency McCann Erickson, will provide viewers with a unique and compelling look at Master Chief and the world of "Halo 3." It is easily one of the most anticipated ads of the year and promises to be the biggest event in appointment advertising this year. It underscores the innovative approach and driving influence the "Halo" franchise has commanded. The television spot will also be available for download exclusively for Xbox 360 users via Xbox Live Marketplace."