In a large bowl, mix the whipped topping, sour cream, and pudding mix until blended. Fold in pineapple.
On a flat serving plate or large baking dish arrange four graham crackers in a rectangle. Spoon about 1 cup of the pudding mixture over the crackers; top with about 1/4 cup banana slices.
Repeat layers 4 times. Cover and refrigerate for at least 8 hours or overnight. Graham crackers should be soft.
Before serving top with more banana slices, and strawberry slices. Sprinkle on the coconut and drizzle with the chocolate sauce.