The big download today is undoubtedly a demo for Microsoft's Fuzion Frenzy 2, but a trailer for Portal, and videos from the Tokyo Game Show should also be worth a look. As was the case with content from day 1 and 2, a few of the downloads are for Japan only, but the demo doesn't seem to have any region restrictions.

Day 3 content: Items with a * are Japan only

Trailers

Portal

Demo

Fusion Frenzy 2

Video

TGS Showfloor video 1

TGS Showfloor video Day 1*

GM Sensui Interview*

Xbox Live The Party #1*

Xbox Live The Party #2*

Xbox Live The Party #3*

Xbox Live The Party #4*