Oooh.. Can't wait.. I wonder how long it'll be before Killing Floor goes live? I hope Tripwire see the advantage of launching from day one!
I can see why Valve are staggering their releases though, it makes a lot more sense from a "trying to get us to buy stuff" perspective. If they just dump them all on us at once we're not likely to buy them all, if they release something every week we just might..
Unless like many here (including myself) you already have them all, which makes it a little frustrating. XD
If each week's update centres on a single feature I suspect there'll be a half-life week, a deathmatch/TF2 week, and a Zombie week.. I'm looking forward to zombie week most, if it does pan out like that!