One of the best Mercer Mayer thangs out there is the series Mercer Mayer's Critters Of The Night.

    Some titles include
  • Ooey Gooey, in which Captain Short Bob loses a tooth and fruitlessly seaks the sea beast that took it,
  • Midnight Snack, in which the toad Groad makes a snack for the mosters passing by,
  • To Catch A Little Fish, (my personal favorite) in which young Thistle Howl catches a little fish "I took him home to Momma.../and put him in a dish." The kicker is, the "little fish" is actually a huge, grumpy octopus, and the pictures tell the real story.
These are technically children's books, but any adult who loves The Nightmare Before Christmas and such ilk will like them as well.