Biggest womanizer, oh that would be my brother... ooooh! in an anime! *blush* Silly me....
lol
Seriously though, I agree with ameria, I seriously think that The Mega Playboy was a definite womanizer, even if it wasn't his free will... but miroku is just one, because he wants to be. ^^
But then again, what about Keitaro? from Love hina. I mean, he lived with how many girls? that all wanted him? ^^