  Status of tau lepton decay Monte Carlo generator TAUOLA, its main
applications and recent developments are reviewed. It is underlined, that in
recent efforts on development of new hadronic currents, the multi-dimensional
nature of distributions of the experimental data must be taken with a great
care: lesson from comparison and fits to the BaBar and Belle data is recalled.
It was found, that as in the past at a time of comparisons with CLEO and ALEPH
data, proper fitting, to as detailed as possible representation of the
experimental data, is essential for appropriate developments of models of tau
decay dynamic.
  This multi-dimensional nature of distributions is also important for
observables where tau leptons are used to constrain experimental data. In later
part of the presentation,use of the TAUOLA program for phenomenology of W,Z,H
decays at LHC is addressed, in particular in the context of the Higgs boson
parity measurements. Some new results, relevant for QED lepton pair emission
are mentioned as well.
