I've got to try this with my TV and cable box.
The standard cable box remote has a button for "power all" but it didn't work, it only does the TV, not the cable box as well.
I'll try pressing the individual buttons next time.
It would be handy, because with modern cable box controls, you use up 13 gestures all too quickly.
As it is, I don't have any left over for the DVD or VCR.
I love this thing but can't wait for version 2. (Not to mention I'll have more commands at my fingertips merely by way of having two wands

)