The title of this post? Came from my evil warlord-wizard, Kovid, who prudently waited until the credits rolled on Lord of the Rings before muttering, "Sauron is a pussy." The lack of actual thought inside that empty bucket of armor was painfully obvious even across dimensions.
Scary villains are scary, sure. But capable villains will make your heroes work for their win ... and maybe rip out a few hearts or other body parts along the way.