Preheat oven to 350°F (175°C). Combine crushed wafers, melted butter, and sugar until the mixture looks like damp sand. Press into a greased 9x13-inch pan and bake for 10 minutes. Let cool completely.
In a large bowl, beat cream cheese and sugar until smooth. Add eggs one at a time, then mix in vanilla and sour cream until creamy.
Pour over the cooled crust and bake for 35–40 minutes, until the center is just set. Cool, then refrigerate for at least 4 hours or overnight.
For the strawberry layer, mix crushed Oreos with melted butter. Spoon chopped strawberries and drizzle with glaze over half the cheesecake, then sprinkle with the crumble. For the banana layer, spread banana pudding over the other half, top with banana slices, and finish with whipped cream.
Decorate the strawberry side with fresh strawberries, syrup, and wafer crumbs. Garnish the banana side with more banana slices, crushed wafers, or cinnamon. Slice into squares and serve chilled.