Fantagraphics art director Jacob Covey posted this creepy Dennis The Menace panel to the Fantagraphics Flog!. (Click image to see it larger.) It's scary how angry Dennis's dad is at his son!!! Fantagraphics is publishing a beautifully-packaged collection series called Hank Ketcham's Complete Dennis The Menace. I have the first one and it's a real laff-a-minute.
Link to panel, Link to buy The Complete Dennis The Menace
UPDATE: Jacob sent a link to this far weirder Dennis panel that he posted last month. Whoa. Link to post, Link to Comics Journal thread