I often think about stellar albums. The ones where they're really isn't a skip-able track. Off the top of my head, these come to mind: The Beach Boys Pet Sounds, Collective Soul Collective Soul (blue album), Bush 16 Stone, and Green Day Dookie. What are some of your perfect albums?
I love Pink Floyd, but to be honest I'd put animals on there before dark side. I didn't fully list everything that I'd add, just a few to get the conversation going:-)