Damn, I still don't have the Orange Box!! And I'm the one who advertised it on the Crisis forum. And I'm also a huge Half-Life fan. But I did get to play Episode 2, which was freaking awesome in the little time I had to play it. And I've also played TF2 which is fun for me.
But when I do buy it, I should put it on a separate Steam account, because I already have Half-Life 2, and Episode 1 on my current one, so I don't waste the CD Key.
And it's also funny how an age old engine, the Source engine, never ceases to amaze me. They designed it so it could be easily updated.