Anyway, here are some of the ugly things I liked, including a nice full-page reproduction of Ivan Albright's Dorian Gray in my icon.
Once again I credit Rizzoli for doing a nice job with a beautiful book with really vibrant, even lurid, illustrations. Often the versions I find on the web are not nearly as arresting.
Excellently weird monsters in Matthias Grünewald's Temptations of St. Anthony
Rubens' Head of Medusa
Monster from the church at Chauvigny.
I love that people have been making this face for centuries.
Grotesque Old Woman, probably by Massys.
I like Cranach's Fountain of Youth -- all the old people being pulled in carts or wheelbarrows, and then after a dip in the fountain, it's time for a nice picnic.
Satan Automaton: "It could roll its eyes and move its tongue, emit a noise and spit smoke from the mouth."
Have no Fear - He's a Vegetarian
Martini's Portrait of the Marchesa Luisa Casati.
Susini's modular anatomical statue of 'La Venerina'.
Zumbo's The Plague
Arnold Böcklin's Plague
Walter Crane illo for Beauty and the Beast
Otto Dix Cartoon for Metropolis
And in the realm of kitsch, there's girl on a bear rug, but at least it's from 1896.