Watergate Salad (or Green Fluff)

 2  (20 oz) cans crushed pineapple

2 (4 oz) boxes pistachio jello pudding and pie filling

2 cups mini marshmallows

1 cup pecans, chopped (reserve some for garnish)

1 (8 oz) Cool Whip

Add all ingredient to a large bowl. Gently fold in the Cool Whip.  Top with pecans and refrigerate.