You know, seeing how LONG it has been and the amount of units sold per volume on both the PC and Mac, I'm suprised that Valve hasn't released it yet. I'm sure that many linux and amiga users would pay 39.99 for Half Life.
Seems to me that Valve plans on milking a dead cow, until the new cow is ripe and ready for distribution.
Poetic justice, if you ask me.