Source: http://www.eurogamer.net/articles/2012-04-25-microsoft-to-launch-tv-style-adverts-on-xbox-live
"With the growth of Xbox Live, advertisers no longer have to choose between digital and TV advertising - we're offering the impact of TV and the interactivity and addressability of digital in one platform," said Microsoft's Ross Honey, general manager of Xbox Live Entertainment and Advertising.
"As more and more industry leaders like ESPN work with us to help monetize their content on Xbox Live, TV media buyers win with the ability to extend their standard TV spots to this highly engaged consumer audience."
In the future you'll watch ads in the corner of the screen while you play!