Alice in Wonderland/Nightmare Fuel

Disney film:

 * In Alice in Wonderland, the Walrus and the Carpenter sequence. (Which is actually from the original book, and it's no less creepy then what Disney came up with.)
 * The "mad watch" scene entirely too intense, with all the screaming and half-crazed profile shots.
 * The Queen of Hearts, specifically the "Painting the Roses Red/Off with their heads!" scene.
 * The Cheshire Cat and the "Happy UnBirthday" sequence.
 * The scene at the end where Alice is running up a staircase, and she grabs a doorknob, only to have the door come to life and complain about her grabbing its nose. Mild and funny, right? HA. Try being six years old and having a crippling phobia of doors.
 * The drugged-up, blue caterpillar... They're just talking and then "I am exacicitually three inches HIGH, and THAT IS A VERY GOOD HEIGHT, INDEED!!!" *flashes psychedelic colors and explodes*
 * Tweedledum and Tweedledee sneaking up on Alice, and the flowers turning on her and chasing her away.
 * That cage-bird-thing in the Tulgey Wood.
 * Alice almost drowning in her own tears. Not only is she so traumatized by everything so far that she bursts into tears, but it almost kills her.

Other adaptations:

 * Jan Svankmajer's 1988 adaptation, especially the White Rabbit.
 * Some of the animal characters in the 1972 version with Fiona Fullerton look pretty unnatural as well.
 * The Cheshire Cat as portrayed in BKN's Alice in Wonderland: What's the Matter with Hatter. And you thought the McGee version was creepy. And this one's supposed to be comic relief!
 * And we can't forget the Jabberwock in the 1985 made-for-TV version.
 * What about the March Hare in the 1999 Hallmark version? According to Wikipedia, his costume even scared the actress who played Alice!