RECENT DEVELOPMENTS IN HEAVY FLAVOR MESON SPECTROSCOPY

More than 30 years after the discovery of c-quark, the heavy flavor
spectroscopy keeps surprising us. The multitude of new bound states
found in recent years outnumbers the available slots in ccbar
spectrum. This fact leads to exciting necessity to incorporate new,
unconventional ways of particle formation -- multi-quark states, meson
"molecules", "hybrids" etc. Discoveries of charged states, such as
D_sJ or Z(4430), may support some of these theories.

In this talk recent experimental developments in charmonium sector are
summarized. The main theoretical models explaining unusual states are
also covered.