A year and a half ago (dec 2008), my sister, dad and I climbed up Mt Ossa and Pelion East. It was a very good walk, though pretty tough. Pelion East was probably the more exciting of the two, with boulder clambering and a little bit of rock climbing. There was snow on Mt Ossa, however, which was a lot of fun.
Dad on top of Tasmania (Mt Ossa, 1,614 metres)