I definitely agree about the 3 disc 'The hits/B sides collection. It's a really good introduction to his work. But any of his stuff from the 80's is great. Start with 'Dirty Mind' and work you way trough to 'Lovesexy' (including 'The Black Album'). You won't go wrong with that. As far as his 90's stuff goes i'm not sure since some of it is hard to get hold of. Post 80's stuff I have heard that is good...'Musicology', 'The Rainbow Children' and 'Come' are all good albums.