I've been a mad scientist for about 12, going on 13 years now. During that time I've been specializing mostly in designing robot overlords but sometimes with side interests in rocket science and yo-yo tricks.
Though a mad scientist, my professional opinion is that I'm not really a fan of genetic mutants. Surprising, I know, but think about it. Yeah, they have their place around the home I suppose, but really, too unreliable for a reasonable attempt at world domination. For my money, robots is the way to go!