For some reason, necromancer has a name that nobody has really tried to emulate or rip-off...most would rather go for something that *suggests* necromancy and therefore oozes positively coolness or whatever.
Which in turn makes necromancer's name cool because he (or she) is very easily recognisable by it. 8/10
p.s. Get Smart references are so quaint they are cool, 'nuff said :P