Team Fortress 2 is available for Mac.

Team Fortress 2 is now available for download for Mac OS X users.

In this regard, the price of the game fell by half, and Valve provided the opportunity to download, install and play the game for free until the 13th of June 2010 (both in the Mac and the PC version).
')
Cool video from Valve for TF2 on Mac OS X: www.teamfortress.com/macupdate

News blog: www.teamfortress.com/post.php?id=3929&p=1

PS Phew, waited (-:

UPD. As correctly noted in the comments, all users who came into the game with poppy will be given headphones until June 14th. ^ _ ^

UPD.2 If someone from PC users really wants headphones, and there are no desire for virtual / hackintosh users, please login: pass me in PM. Do not declare such on Habré! : D