Finely Crush graham crackers in storage bag. Place in small bowl; add butter and sugar; mix well. Press crum mixture in a spring form pan or a medium stoneware bar pan.
In classic bowl, whisk whipped topping and sour cream (if using whipped cream fold in sour cream and pie filling) until blended. Add pudding mix; whisk until mixture is well blended and smooth. Spread half of the filling over the crust. Slice bananas and arrange over filling. Spread remaining filling over bananas.
Grate pecans over top. Refrigerate at least 30 minutes. Cut and serve.