What are other famous names/sayings like "Down the rabbit hole" which imply alternate reality or insanity?

I am thinking about famous characters in novels and movies that thought differently or places where what is illogical is logical and need help.

So far I have:

“Mad Hatter”
“Down The Rabbit Hole”
“Left of Center”
“Wing Nut”

Anything that means a break from reason or logical reality.

Can anyone help me add to this list? I am using the information to illustrate a writing project.