Essentially, you get HL@, HL@ EP1, HL@ EP2, Portal and TF2 in one box for about $50. I haven't played ZHL2 yet, and now there's no reason for me to get them separately. However, If you already have HL2 and / or HL@ EP1, you can gift them to a friend through Steam, and still play Portal and TF2 and EP2. Release is October 10th.
"Never, Never, Never quit." - Winston Churchill "Men don't like to cuddle. They only cuddle if it leads to.. You know.. Lower cuddling." - Ray Romano "Tell your wife that she looks pretty, even if she looks like a dump truck." - Ricky, age 10
I am loving Team Fortress 2. I even like the cel animation! (gah. Did I say that?) The animated style allows for lots of nice touches, such as crystal clear class distinctions, and the achievements do help make it interesting. New maps are starting to appear. Whee!