Poll. Who is the greatest drummer?

You really can't be "the greatest". Music isn't a competitive sport. There are different levels of musical proficiency and competency, but there is no greatest. The drummers on this list play in different musical contexts, so it's like comparing apples to oranges. Also, no other style besides rock/metal is represented. They are all the greatest in the sense that they are all original drummers who developed an individual sound and approach to playing (which I think is the true mark of a great musician).