In large saute pan over medium heat, melt 2 tablespoons butter. Place pound cake slices in pan; cook slices until golden brown, 2-3 minutes per side. Remove cake from pan, cut each piece in half diagonally to form two triangles. Set aside. In same pan over medium heat, melt remaining butter. Stir in brown sugar, pecans, lemon juice, vanilla, cinnamon, nutmeg and salt. Cook sugar mixture 3 minutes. Stir in bananas, cook until heated through (about 2 minutes). Add rum. Ignite using gas flame or long stemmed matches. When flames subside, stir in cream. Remove pan from heat.