Entrance of a Super-Villain
Well, okay, maybe not a super villain. Let's say an adequate villain.
I was looking over page 3 of The Matriarch, which introduces a villain named Crush, an ex-pro-wrestler with a mullet (who for some unsettling reason looks a tiny bit like Ed Brubaker), and I noticed that (penciler) Steven Yarbrough never shows Crush's face. What this does is set up the next page; Crush charges our matronly hero (hoping to "crush" her with his robotic arms), revealing his true intentions... and his face. Makes for a nice, dramatic moment (I'll post the panel in question as soon as it's inked).