  Pade approximations appear to be a powerful tool to extend the validity range
of expansions around certain kinematical limits and to combine expansions of
different limits to a single interpolating function. After a brief outline of
the general method, we will review a number of recent applications and describe
the modifications that have to be applied in each case. Among these
applications are the MS-bar/on-shell conversion factor for quark masses and the
top decay rate at NNLO in QCD.
