I just discovered this linked from someone's blog to someone else's blog. I love that you can put the chicken in still frozen and there's only a few ingredients.
INGREDIENTS:
6 frozen boneless, skinless chicken breast halves
12oz bottle barbecue sauce
1/2 cup Italian salad dressing
1/4 cup brown sugar
2 T. Worcestershire sauce
DIRECTIONS:
Place chicken in a slow cooker. In a bowl, mix the barbecue sauce, Italian salad dressing, brown sugar, and Worcestershire sauce. Pour over the chicken.
Cover, and cook 3 to 4 hours on High or 6 to 8 hours on Low.
Shred chicken and eat on buns or baked potato.
Note: this can be frozen in ziplock baggies and later thawed in the fridge over night. Reheat in the microwave or in a skillet.