  Recent observations have revealed that MHD waves and oscillations are
ubiquitous in the solar atmosphere, with a wide range of periods. We give a
brief review of some aspects of MHD waves and coronal seismology which have
recently been the focus of intense debate or are newly emerging. In particular,
we focus on four topics: (i) the current controversy surrounding propagating
intensity perturbations along coronal loops, (ii) the interpretation of
propagating transverse loop oscillations, (iii) the ongoing search for coronal
(torsional) Alfven waves and (iv) the rapidly developing topic of
quasi-periodic pulsations (QPP) in solar flares.
