How's it going, mosslack?
Hey, I'm still waiting for a new thread, one from this decade...

I kid, I kid!
Screen mirroring -same image on every screen of a multi-monitor setup- seems to have pretty limited use, so it's never bothered me much that it doesn't work on a Hack.
Most often I've seen people use it to give a presentation or a lesson- the presenter manipulating the main screen, and the viewers watching an unobstructed mirrored view of it on a projector or TV.
A friend of mine needed it recently to give a Flash lesson to someone- using a 21" Wacom Cintiq, while the student followed along on another monitor. That setup works great, since the view of work being done on a Contiq is mostly blocked by the user. My friend was forced to boot into Windows 7 (in Windows it's called cloning the display)to give the lesson. Ahh well, can't do everything with a Hack!