Go Ahead, Judge
Some of the worst book covers ever are collected on the hilarious online gallery of Bad Book Covers. The offending "art" ranges from the completely nuts , to the hilarious (a cover for Pet Sematary), to bad concepts like a beachy vampire scene(?!), to the disturbing (you'll know it when you see it), to dated work like the covers of Trixie Belden mysteries (so much cooler than the anal-retentive Nancy Drew). You'll marvel that people got paid to think these up. Good fun. You can click on the images for a bigger view and some snarky remarks from the site owner.