Some good responses, but a whole lotta nonsense, too. I'm a drummer who has played rock, blues and jazz with some of the greats in each field, as well as being a published music critic and owning 60,000+ titles in my music library. Harrumph. Blues and jazz are not opposites, as one (who is probably not a drummer) mentioned. First, jazz evolved from blues. And if you can't play a blues, you really can't play jazz. Many of the greatest blues drummers (i.e. Fred Below, Francis Clay) started out as jazz drummers. As far as greatest rock drummers, yes, Ginger, Moon and Bonham qualify. Earl Palmer no question (though he was more R&B, nonetheless a brilliant player). But the list must include Charlie Watts, Mick Avory, Ringo, Jim Gordon, Clive Bunker, Buddy Miles, Jon Hiseman, Ian Paice, Mitch Mitchell, Pip Pyle, Michael Shrieve, Bruford, Scott Asheton, Robert Wyatt, Boz, Michael Giles -- and others, though Neil Peart doesn't make it. Someone mentioned Cobham as the best jazz drummer. No. Not even in the top 50. For jazz, that's Tony Williams, Elvin Jones, Art Blakey, Philly Joe Jones, Jo Jones, Ed Blackwell, Billy Higgins, Joe Chambers, Jack DeJohnette, Andrew Cyrille, Sunny Murray, Max Roach, Roy Haynes, Frank Butler, Pete LaRoca -- and Rich, Krupa are in there somewhere, as is Bellson.