Smith Machine, I agree. I only see its worth for standing calf raises.
Cable Flies, I disagree. I absolutely love the pinch I get in my chest from them.
CGBP, I disagree, unless you're doing such a radical hand placement like the picture. In that case, you deserve a wrist injury.
Squats,
Kickbacks, I'm conflicted. Unless I get the perfect angle, they rape my shoulders. There are plenty other triceps isolations I'd rather do.