In a slow cooker, mix together:
One 24-ounce jar medium or mild salsa
Juice from one lime
1/4 cup fresh cilantro, chopped
One 1.25-oz. package taco seasoning
2 jalapeno peppers, finely chopped (optional)
Add 4-6 boneless chicken breast halves to the slow cooker and coat with the salsa mixture. Cover and cook on Low for 6 hours.
Serve the chicken with the salsa mixture spooned over the top. If you're feeling crazy, throw a dollup of sour cream on top with some crushed tortilla chips.
This is also delicious as a taco filling or in a taco salad.