Valve gave Mac users a hint of Half-Life 2's release on Steam tomorrow with a teaser video (posted below). The spot parodies Apple's 1984 ad and uses Half-Life 2 characters in place of the original actors, such as Dr. Breen as Big Brother, Alyx as the runner and City 17 residents in place of proles. The short spot proclaims freedom from having game ownership "dictated by platform," an allusion to the Mac/Windows cross-over Steam Play mode.