  The ARPES spectra in high-Tc superconductors show four distinctive features
in the quasiparticle self-energy. All of them can be explained consistently by
the theory in which the electron phonon interaction (EPI) with the forward
scattering peak dominates over the Coulomb scattering. In particular, this
theory explains why there is no shift of the nodal kink at 70 meV in the
superconducting state, contrary to the clear shift of the anti-nodal
singularity at 40 meV. The theory predicts a ``knee''-like structure of the
imaginary part of the self-energy, which is phonon dominated for $\omega
\approx \omega^{(70)}_{ph}$, and shows linear behavior for $\omega >
\omega^{(70)}_{ph}$ - due to the Coulomb scattering. Recent ARPES spectra give
that the EPI coupling constant is much larger than the Coulomb one. The
dip-hump structure in the spectral function comes out naturally from the
proposed theory.
