YMMV: Harold and the Purple Crayon
- Ear Worm: The animated series is chock full of these.
- Nightmare Fuel: It's not a particularly scary book in the traditional sense; Harold is a little boy who draws things with his crayon and they come to life, and they're almost exclusively nice things. The creepiness comes later when you realize that Harold is the only real character in the book. The whole world is empty, except for Harold and his crayon.
- Averted in the animated series who starts and ends in the Harold's room, with an art shift to make it clear what happens in Harold's imagination and what happens in the real world.note Also, Harold's parents are often mentioned and his mom (although only her hand is visible to the audience) appears at the start of the several episodes to joss the fact that Harold's alone in the world.
- Recursive Adaptation: The HBO series actually spawned several baby books.
- That Reminds Me of a Song: The animated series is very musical that it breaks into Disney Acid Sequences very frequently, more than once an episode.