I haven't tried it, but I would be very surprised if playing 1080p video over ssh/X was watchable. My initial plan was just to use Windows 8 for games and do all my other computing inside an Ubuntu VM, but the Windows 8 environment (other than for command line stuff) is really growing on me. Currently I only use the VM for banking and shopping, which I'm still (perhaps unjustly) afraid to use a Windows machine for.