Glory of glories! 2009 is already better than 2008 with the debut of the MLB Network (DirecTV 213, if you've got it).
However, if you don't get the MLB Network and you're an Astros fan, there's little reason to rush to get it for Astros content. That's because...uh...there isn't any. It's a mouthpiece for the Yankees/Red Sox/Cardinals conglomerate - like MLB. I'll keep an eye out and let you know when Cathedrals of the Game: Minute Maid Park is on.