Peel the banana and cut it in half lengthwise. Place the banana slices against the sides of a long, shallow dish.
Place the scoops of vanilla ice cream, chocolate ice cream, and strawberry ice cream in a row between the banana slices.
Drizzle the pineapple sauce (or spoon the fresh pineapple) over the vanilla ice cream. Drizzle the chocolate syrup or hot fudge over the chocolate ice cream. Drizzle the strawberry sauce (or spoon the fresh strawberries) over the strawberry ice cream.
Top each scoop of ice cream with a generous dollop of whipped cream and a maraschino cherry. Garnish with the chopped peanuts and serve immediately.