Two-loop self-energies in the Standard Model

Recent progress in the calculation of two-loop self-energy diagrams is revi ewed. At first we point out the new graphic possibilities in our 'Feynman d iagram analyzer' (DIANA), which of course is not only applicable for self-e nergies. Further we mention an interesting development in the reduction of on-shell two-loop self-energy diagrams including their master integrals for one massive parameter. Finally an application of our methods to the two-lo op photon self energy in the Standard Model (SM) is described.