I spent a week in Tasmania several years ago, loved it. We stayed along the coast and at Cradle Mountain. We saw many animals. We went on a night trip and saw Tasmanian devils, they are small but have a blood curdling yell (not sure if you can still see them because they have been dying off from some disease). We also saw a platypus and many kinds of small kangaroos. A real treat was the fairy penguins. Some locals on the coast told us where to go at dark to see the fairy penguins return from the sea to their nests. We sat on a picnic table and just as it got dark we were over run by tiny penguins rushing out of the ocean to get to their nests. Some would go into the wrong nest and all heck would break loose. It went on about an hour, one of the most interesting animal encounters I have ever experienced.
I also like the fact that Tasmania seemed to be untouched by the hustle and bustle of modern life, it seemed like a step in back in time.
I would wholeheartedly recommend a trip there.