  We present results from a comprehensive numerical study of {\it morphological
phase separation} (MPS) in unstable thin liquid films on a 2-dimensional
substrate. We study the quantitative properties of the evolution morphology via
several experimentally relevant markers, e.g., correlation function, structure
factor, domain-size and defect-size probability distributions, and growth laws.
Our results suggest that the late-stage morphologies exhibit dynamical scaling,
and their evolution is self-similar in time. We emphasize the analogies and
differences between MPS in films and segregation kinetics in unstable binary
mixtures.
