Close grip dumbbell press and skull crushers off the floor are awesome, also try playing with the angle of the bench for the close grip dumbbell press if using a bench. Getting rid of momentum and your body's stretch reflex is what makes the close grip floor press/skull crusher so effective. If your feeling elbow pain with skullcrushers you could try varying the angle your doing them at or bring the bar/ dumbbells behind your head instead of to your forehead. Just my 2cents, great thread.