I dont count Sesshoumaru as a villain anymore... ^_^'
But that's just me.
Jakotsu from the Band of Seven (InuYasha) was quite funny and... I dunno I loved him. ^_^
-beats Renkotsu and InuYasha- Why'd he have to go!?
Homosexual sadist = love... That's kinda creepy
I can't think of any villain besides him that I really loved...