Poached chicken is a really handy thing to have around, for making chicken salad, sandwiches, and a whole lot more. When I have the time and the will, I poach whole chickens and stock them in the freezer. These days though, I don't have the time or the energy for such tasks, so I cheat a bit and poach boneless chicken breasts.
While chicken breasts are so handy, it's very easy to overcook them. This method is just about the easiest and most foolproof way of cooking the white meat so that it's moist and tender, yet cooked through properly.