Random Matrices are powerful tools for modeling
 complex systems, ranging from interacting quarks
 to financial correlations. The last two decades
 have seen a burst of activities which is briefly
 reviewed in the talk. In addition, the basic ideas of
 supersymmetric methods in Random Matrix Theory
 are sketched. Supersymmetry had an enormous impact
 on the field, because it made possible a large
 number of calculations which could not be tackled
 before.