Did not see any posts on this, but few like me who have not already bought the Orange Box, you can now by the three games on their own. I just picked up Portal for ten dollars at Circuit City. I like the idea not having all three games because I would probably do nothing but play games all day.
I guess if I do not find another job before I am laid off at the end of June, I will get the HF2 and Team Fortress games. 