I may of mentioned this one earler but I thought it might be worth mentioning again... for a practical joke reason.!
PRemoteDroid,
It turns your phone or tablet into a wireless mouse and keyboard. You run a small client on the computer, open the app and connect.
I have just installed this on one of the sales guys computers, disabled notifications and I am ready to control his mouse at anytime! Same kind of a joke with a bluetooth mouse, just with no real visable clues its running!
With the added bonus of the keyboard, I can type at the same time as him.... he may hear from morphius next time he types a word doc..... Neo... follow the white rabbit!