Xbox Live Marketplace - Halo 2, Rainbow Six maps and more

This week, Xbox Live Marketplace has these downloadable goodies:

• Halo 2 Blastacular Map Pack ($4, but not buyable with Microsoft Points - you'll need a credit card and access the downloads from within the game)
• Rainbox Six Vegas Player's Pack: Red Edition ($10) - includes maps plus new Assassination and Total Conquest modes
• Two arcade games: 3D Ultra Minigolf Adventures ($10) and Gyruss ($5)
• Command & Conquer 3 Tiberium Wars videos (free), themes ($1.88 each) and picture packs ($2 each)
• The Colbert Report and Daily Show ($2 each, posted hours after they air)

And you Pac-Man addicts can show off your mad skillz in the World Championship that begins April 25 on your home console and ends June 5 in New York City where a winner will be crowned and awarded a Quiznos sandwich per week for 26 years and 100,000 Microsoft points (aka $1,250)...