It's not uncommon to leave the house with a bag full of gadgets that will probably need a charge at some point during the day. So you can either bring an assortment of cables with you, let your devices all fight over a single charger, or wait until Samsung's new three-headed micro USB charging cable is finally available.
For $40 (available soon) the single cable splits a two-amp charge across multiple devices depending on how many of the micro USB connectors are being used. If all three are connected to devices, they'll each receive 667mA of power and all charge at once, albeit slower than normal. If you only connect two devices they'll each receive a single amp, and if you only connect one it will be able to gorge on all the power. [Samsung via Android Community]