Have to go with Bonham, but I really like Max Weinberg (Springsteen/E Street band drummer)
Other notables that i like listenin wise :-
Jimmy Chameberlin
Keith Moon
Dave Grohl (if only for Everlong, but his drumming on QOTSA Songs for the Deaf is amazing)
for pure technical ability :-
Mike Portnoy (Dream Theatre)
Dave Lombardo (Slayer, Grip Inc, Fantomas - got to be the HARDEST, FASTEST drummer ever)
Omar Hakim (session drummer played with many people - actually went to a drum clinic with him a few years back... holy shit... amazing, effortless drumming)