  We investigate Fermi liquid states of the ultra-cold magnetic dipolar Fermi
gases in the simplest two-component case including both thermodynamic
instabilities and collective excitations. The magnetic dipolar interaction is
invariant under the simultaneous spin-orbit rotation, but not under either the
spin or the orbit one. Therefore, the corresponding Fermi liquid theory is
intrinsically spin-orbit coupled. This is a fundamental feature of magnetic
dipolar Fermi gases different from electric dipolar ones. The Landau
interaction matrix is calculated and is diagonalized in terms of the spin-orbit
coupled partial-wave channels of the total angular momentum J. The leading
thermodynamic instabilities lie in the channels of ferromagnetism hybridized
with the ferronematic order with J = 1+ and the spin-current mode with J = 1-,
where + and - represent even and odd parities, respectively. An exotic
propagating collective mode is identified as spin-orbit coupled Fermi surface
oscillations in which spin distribution on the Fermi surface exhibits a
topologically nontrivial hedgehog configuration.
