Tasmania - Is it worth checking out?

Is a week enough? Hell no. But will you have fun? Yes. I love Tasmania. We spent 6 weeks+ there and still didn't get to see and do everything. Highlights: Hobart, Tasman Peninsular (incl. Port Arthur), Bicheno (see wild penguins come up the beach to roost each night, as well as the great East Coast Natureworld), Strahan, Cradle Mountain/Lake St Claire National Park, Mt Field National Park, Freycinet National Park. And that doesn't even touch on the North Coast (where you will end up if you come in by ferry to Devonport) or the historic towns in central Tas.