''Being an Evil Overlord seems to be a good career choice. It pays well,
there are all sorts of perks and you can set your own hours. However every
Evil Overlord I've read about in books or seen in movies invariably gets
overthrown and destroyed in the end. I've noticed that no matter whether
they are barbarian lords, deranged wizards, mad scientists or alien
invaders, they always seem to make the same basic mistakes every single
time. With that in mind, allow me to present...''

http://minievil.eviloverlord.com/lists/overlord.html