I am not kidding this is one heck of a great recipe for ginger chicken.

1 bottle Teriyaki sauce (size of bottle depends on how many pieces of chicken being cooked. You want all the meat to be covered)
1 bunch cut green onions
1 large can pineapple chunks with juice
1 bunch chopped garlic
1 bunch chopped ginger root

Let this all sit over night in a refrigerator and then add it to your chicken.
Then let it set another night in the refrigerator before BBQing. Really tastes great!
Stu