Some of them are among the "without whom" I'd never have picked up the instrument in the first place: Geddy, Jack Bruce, JPJ, John Entwistle (missing are Tony Levin, Chris Squire). Have come to love PMac, Victa and Jaco since.
I should really like Les Claypool but don't get it. (My Primus ticket is on eBay if anyone's interested). Flea, Cliff... not my thing either.