Can't provide links to the art, but some of the cartoons from Dragon magazine that I remember most fondly were:
1. An unfortunate adventurer, flattened against the wall by a huge boulder, with only his hands and feet showing, while a priestly-looking character in a robe looked at a roll of parchment, and said to a facepalming halfling, "Hey, you're right! I did have a scroll of protection. Bummer." This was especially funny to me because at the time, I was playing with a cleric who could never remember which spells he had prepared.
2. An enormous hulk of a barbarian, shackled to a tree and peppered with arrows that only lightly penetrated his skin, while a short distance away, a bearded official crossed numbers off a scrap of parchment and informed a group of nervous-looking archers, "Sorry boys, he's still got 36 hit points left."
Good stuff.
