Every now and then, we happen onto a Web site that’s utterly worthless yet undeniably fascinating.

Take Smalltime’s site, “Guess the Dictator or Sit-Com Character.” You think of a dictator or sit-com character, past or present. Then you start answering yes-or-no questions about the person you have in mind. Within minutes, the game guesses your identity – with stunning accuracy.

Sound pointless? It is. And yet when you finish the first run, it’s nearly impossible not to play again. And again.

Take this irresistible game for a spin the next time you have a few minutes to kill. (Note: POV cannot be responsible for productivity losses resulting from repeated attempts to stump the system.)