One Perfect Moment: Darkseid
Having seen a lot of villainous perfect moments, I've noticed a common trend. A lot of bad guys talk about how evil they are. Green Goblin plays around with a Gwen Stacy doll. The Joker teases Babs. Etc, etc. But when you're really evil. I mean, when you're dag-nasty bad? You don't have to advertise.
Scott Free and Big Barda have just gotten married when Darkseid approaches. They, of course, get the hell out of dodge for the honeymoon, leaving Earth until someone wants to revive their series. Shilo Norman and Oberon are left behind under shelter.
Ruining a wedding just to prove that life is constant struggle? Now THAT'S evil.