Hellhammers work on De Mysteriis is excellent. 
He uses the blast beat like a metranome while using the cymbals to make some great compositions, with the toms being used effectively and not excessively, along with some great foot work e.g freezing moon intro, and unyeilding double kick, fucking love it
 
 
Also a mention too
Steve Flynn - his work with atheist is jazzy ass kicking excellence (despite a bit of sloppyness on the debut) and recently i heard his work in a new band (the name escapes me but there on Starfactory Records owned by atheist or kelly... something like that) and he is still as technicle as ever 
 
 
Sean Reinert - His work on death and cynic is untouchable, crushing on human and sporadic yet apt on focus 
 
 
Tim Yeung - The double kick god, his unrelenting assualt in decrepit birth destroys you everytime and leaves your limbs aching just thinking of the competence the body needs to pull off such a feat. Also kicks ass with vital remains live 
 
 
Flo Mounier - A lot of people can blast, and now gravity blast, but no one uses the whole kit as much as flo does while incoperating those fast bastards. Instead of taking on a "focus" style drumming within Cryptopsy songs, he sticks too the metal drumming but adds that extra over the top addition of technicality and "free flo", plus his live solos own 
 
   
and if this thread stays alive i'll add some more...