Anyone naming albums from Gaga, Rihanna, Britney, Katy, Nicki or Ke$ha needs to leave now.
People tend to think that good = not filler, which isn't the case at all.
Acknowledging 'filler' isn't necessarily a bad thing - some artists do it well, but that doesn't mean it's not there just to take up some space.
Off the top of my head, I'd probably go with Music and Thriller.