If the software madness exist like it is currently, it will hit the spot sooner than mid 08. Assasins creed will be there on the list very soon, as well as mass effect. And this are fresh releases.
There are a lot of titles that are near that point. Viva Piniata, Tiger Woods, have a crack. And the question is on how many of these games are numbers for the others missing:
http://vgchartz.com/games/index.php?name=&console=X360&publisher=&genre=&keyword=&order=Sales
Join up to the VGC Mario Kart Wii GP European League!
Or the VGC Mario Kart Wii GP Australian League!
Or the VGC Mario Kart Wii GP American League!
Or the VGC Halo 3 American League!
Or the VGC Call Of Duty PS3 League!