I love poached chicken breasts to use in other dishes. They are done in 10 minutes. Saw Rachel Ray poach some boneless, skinless breasts tonight that looked perfect.
She was making soup, and poached 6 breasts in 6 cups of chicken broth, with some diced vegetables and herbs. Here's the poaching part of that recipe:
"Cover the pot and raise heat to bring liquid to a boil. Add chicken to the pot, cover and reduce heat to medium low. Poach the chicken 10 minutes. Uncover the pot. Remove chicken and slice."
Honestly, that's all you need. It's done and it's moist and tender.