The video shows a MacBook Pro booting Windows XP, opening Steam and running HL2 in what appears to be software mode. Full 3D acceleration is still a while off (the hackers have only just managed to get the Mac mini's integrated graphics chip to work, albeit very flakily) but hopefully it won't be long until ATI or another enthusiastic Mac gamer/hacker steps up to the task of providing dual platform video drivers for Intel Macs.