The phenomenon of superdeformed identical bands in both the A=150 and A=190 regions is reviewed. Deviations in the transition energies of the A=190 superdeformed bands at low spins are discussed in terms of variations in the moments of inertia. It is seen that simple blocking arguments predict variations in the static pair correlations at low spins. A simple expression relating the moment of inertia to the pair correlations is then used to extract the relative magnitude of the neutron (proton) pairing within superdeformed configurations. Moreover, low spin differences in the experimental moments of inertia are shown to reflect the predicted differences in the pair correlations.