  Recent results of two interesting classes of supersymmetric two-loop
contributions to (g-2)_mu are presented. Two-loop diagrams involving a closed
sfermion loop can amount to 5*10^{-10} or almost one standard deviation of the
current experimental uncertainty, and two-loop diagrams with a closed
chargino/neutralino loop can be similarly large. The dependence of these two
classes on the unknown supersymmetric parameters and the sensitivity on
existing experimental constraints on the parameter space are quite different.
We also comment on the calculational techniques, in particular the large mass
expansion and the treatment of gamma_5 and the epsilon-tensor.
