  We report time-resolved VR-band CCD photometry of the eclipsing binary RZ Cas
obtained with 38-cm Cassegrain telescope at the Crimean Astrophysical
Observatory during July 2004 - October 2005. Obtained lightcurves clearly
demonstrates rapid pulsations with the period about 22 minutes. Periodogram
analysis of such oscillations also is reported. On the 12, January, 2005 we
observed rapid variability with higher amplitude (~0.^m 1) that, perhaps, may
be interpreted as high-mass-transfer-rate event and inhomogeneity of accretion
stream. Follow-up observations (both, photometric and spectroscopic) of RZ Cas
are strictly desirable for more detailed study of such event.
