All this week, as a Halloween stunt I guess, the comic strip Dilbert is being drawn not by Scott Adams but by mystery artists. The idea is that you have to guess who the famous cartoonist is who's illustrating each day's strip. If you go to this page, you can see each strip and find out the answer.
Thanks to Mark Thorson for letting me know about this. And I should further thank Mark who, along with Rephah Berg, is quick to alert me when I make a typo here. If there's one in this message, I'll hear from Mark or Rephah before 10:00.