I know, this is a few months old, but the Observer on Fringe is so cool, especially as he’s pretty clearly based on the mostly-known-to-hardcore-UFO-theorists Men in Black urban legend. (Or maybe that’s just what they want you to believe.) Playing spot the Observer (who is conveniently on the scene of all the show’s weirdness, like a eyebrow-free Jessica Fletcher) is one of the show’s little pleasures.
In case you’ve missed him (and I certainly have in many episodes), please to enjoy: