I have to realect Dave Lombardo (Slayer) As one of the fastest with incredible timing (Notice I did not say he was the fastest. I mentioned him because he is a fav. of mine)

Randy Castillo (Ozzy/Lita Ford) was probably one of the most talented drummers. I liked how he added American Indian tribal beats and melded it with rock n roll.
(R.I.P Randy...I will miss you)