Here is Major Nelson's Marketplace roundup for August 23rd. A little Surf's Up action and a demo for Madden NFL 08 if you don't already own it.

Demo
Madden NFL 08 (Free, 813.5MB available only in Australia, Canada, Finland, France, Germany, Hong Kong, Italy, Singapore, Spain, United Kingdom and United States.)

Trailer/Video
Surf's Up (HD)

Gamer Pic
GRAW 2 - Ultimate Picture Pack (200 Points)
Surf's Up Gamer Pictures (120 Points)