I absolutely *love* Hoisin sauce. I use it all the time in stir-fry, yakisoba, etc. You can make a delicious marinade with just equal parts Hoisin, Oyster (flavored) Sauce, and Soy Sauce. I use this to marinade beef, chicken and pork for stir-frying.
Another favorite of mine is Hoisin Chicken, which is really easy but really good. Combine 1 tbsp soy sauce with 1/2 tsp each salt and Chinese 5 spice powder. Use this as a rub on a roasting chicken. Cover and refrigerate at least 2 hours, or up to overnight. For the glaze, combine Hoisin sauce and honey until well combined and then add soy sauce. Add salt & pepper, minced garlic and scallions, and a dash of 5 spice powder. (I usually use about 1/4 cup of each Hoisin, soy sauce, and honey). Heat oven to 375 as you bring the chicken to room temp. Roast for 45 min, then brush with the glaze and roast 10 more minutes. Reglaze and put back until chicken is done, about 10 minutes usually. Do not cover during roasting, or the skin will be rubbery instead of crisp and flavorful. You can also do this with cut up chicken in the oven or on a grill.
Enjoy!
kimberly