You'll never in a million years believe it but the biggest crack addiction to hit the Xbox 360 this year is the relaunch of the SSX snowboard game and I don't think it's too early at all to start hyping it's Game of the Year status.
I cannot recommend this DLC enough because it's FREE! Many, many times, developers have released extra content for $10 that doesn't have nearly as much stuff or the polish Valve gave Portal 2's DLC. The Portal 2 DLC is definitely worth checking out because it allows you to revisit a wonderful game you thought you were done with, continues the adventure of your favorite robot adventurers, it's for Science and it's FREE!
Tron discusses the XBox games that have consumed his summer.