  We discuss the transition from quasi-circular inspiral to plunge of a system
of two nonrotating black holes of masses $m_1$ and $m_2$ in the extreme mass
ratio limit $m_1m_2\ll (m_1+m_2)^2$. In this limit, we compare the merger
waveforms obtained by two different methods: a {\it numerical}
(Regge-Wheeler-Zerilli) one, and an {\it analytical} (Effective One Body) one.
This is viewed as a contribution to the matching between analytical and
numerical methods.
