Xbox Live Marketplace - First Ninja Gaiden 2 video, free Halo 3 promotional crap

This week, Xbox Live Marketplace has some new and free Halo 3 content (some of it sponsored by a retailer), several demos and a Ninja Gaiden 2 teaser:

• Band of Bugs Map Pack 3 ($1.88)
• Xbox Live Arcade: Sonic The Hedgehog 2 ($5)
• Demos: FIFA 08, Juiced 2: Hot Import Nights multiplayer, Spider-Man: Friend or Foe and Tony Hawk’s Proving Ground
• Game Videos: Halo 3, Madden 08, NHL 08, NHL 2K8, Ninja Gaiden 2, The Orange Box and Turok
• Themes: Band of Bugs ($1.88) and Halo 3 (free for a limited time; look under Best Buy)
• Pictures: Band of Bugs ($0.63), Halo 3 (free for a limited time; look under Best Buy), Dice ($1) and Soccer ($2)

As part of the Best Buy sponsorship of Halo 3, Xbox Live Silver members will wake up with free Gold accounts on Sept. 25. Alas, the effects only last for two days and then you'll have to pay to play online...