  We analyze systematically several deformations arising from two-dimensional
harmonic oscillators which can be described in terms of $\cal{D}$-pseudo
bosons. They all give rise to exactly solvable models, described by non
self-adjoint hamiltonians whose eigenvalues and eigenvectors can be found
adopting the quite general framework of the so-called $\cal{D}$-pseudo bosons.
In particular, we show that several models previously introduced in the
literature perfectly fit into this scheme.
