Of all time? This is a joke right?
Some of ya'll need to branch out beyond what ATRL says is good

there's so much music in the world, particularly pop music, but we're including PRISM, Born To Die, and Halcyon Days on a list of greatest pop albums EVER? I could see someone making a case for BTW even though I don't personally agree.. but even that is problematic.
Something being mainstream does not automatically imply quality.