  We present theory of two-dimensional turbulence excited by an external force
in thin fluid films on scales larger than the film thickness. The principal
feature of two-dimensional turbulence is the tendency of producing motions of
larger and larger scales thanks to the nonlinear interaction. The tendency
leads to formation of the so-called inverse cascade and, at some conditions, of
big coherent vortices. We discuss the mean velocity profile of the coherent
vortices and the flow fluctuations on the background of the mean velocity for
different regimes. We demonstrate that the regime of strongly interacting
fluctuations leads to an anisotropic scaling inside the coherent vortices.
