  This is a short review of the present status of the dynamics of the heavy
quarks extracted from QCD spectral sum rules. We discuss the determination of
the ``perturbative" quark mass, the decay constants of the $D$ and $B$ mesons,
the form factors of the semileptonic and radiative decays of the $B$ mesons,
the slope of the Isgur--Wise function and the emerged value of $V_{cb}$. We
mention shortly some properties of the hybrid and $B_c$ mesons.
