It was announced this morning that Valve, creator of Steam, Half-Life 2, Portal, and the Left 4 Dead series has intentions to release all of their games on the Mac platform. Mac users rejoice everywhere as they uninstall Parallels or Boot Camp. I probably won't go as far as to do that, but I'll tell you now that the Windows side of my computer is going to see significantly less use. And you want to know the best part of all of this? If you buy (or have bought something) on Windows, you can play it now on Mac free of charge and vice versa. In summary: all of the games you have already on Steam you can just download the Mac version.