would have to say...

#1 Monkey (from "The Adicts")
#2 Till Lindemann (from Rammstein, the fire suit is awesome)
#3 Les Claypool (from primus)

oh and here is my favorite DEAD frontmen
#1 Jim morrison (from the doors)
#2 Jimi Hendrix (multiple bands)
#3 kurt cobain... i know, every ones a nirvana hater, i like them, but if you listen to them so mutch, it gets old. gotta keep nirvana to moderation, lol.