Did you know that the very first joke in the great comedy film The 'Burbs occurs in the opening credits?  The typographically literate will notice that the apostrophe has been replaced with a grave accent, alluding to what the Klopeks dig in their spooky backyard.  (Film still courtesy of DVDBeaver.)

Meanwhile, here's an illustration from Across the Channel by James Crowther (1888).  The caption reads: "The opened grave."