A visit to "Uncanny Valley": Slate's Clive Thompson examines the point at which video-game graphics move from realistic to just ... creepy:

"Consider Alias, the new title based on the TV show. It's a reasonably fun action-and-puzzle game, where you maneuver Sydney Bristow through a series of spy missions. But whenever the camera zooms in on her face, you're staring at a Jennifer Garner death mask. I nearly shrieked out loud at one point. And whenever other characters speak to you—particularly during cut-scenes, those supposedly 'cinematic' narrative moments—they're even more ghastly. Mouths and eyes don't move in synch. It's as if all the characters have been shot up with some ungodly amount of Botox and are no longer able to make Earthlike expressions. ...

"... As comic-book theorist Scott McCloud points out, we identify more deeply with simply drawn cartoon characters, like those in Peanuts, than with more realistic ones. Charlie Brown doesn't trigger our obsession with the missing details the way a not-quite-photorealistic character does, so we project ourselves onto him more easily. That's part of the genius behind modernist artists such as Picasso or Matisse. They realized that the best way to capture the essence of a person or object was with a single, broad-stroked detail."