At home, we just got a set of PS3 Move controllers (motion and navigation.) Combined with our three existing Dual Shock controllers, that's too many devices to comfortably charge with USB cables from the PS3 console. And Reepi (the cat) can't resist chewing on wires.
To solve this problem, we got two of these Quad Dock Pro chargers. Using them, I can move all of the charging devices out of the living room and out of the cat's reach.