I'm not what you would call a Halo fan, I haven't really played the series yet (hence why I'm excited).
But this REALLY ups the bar as far as HD remastered collections go. 4 full games, custom playlists of levels across all the games, 100 multiplayer maps, intact multiplayer from all of them, the value is insane.
I hope it does gangbusters for Microsoft and other companies have to step up their game, I really do. Wind Waker HD looked beautiful and is a great game, but one game remastered for $50 versus 4 games for $60. It even kicks Sony's offerings in the ass, and I have a lot of Sony HD collections.