I would like to have a list of scientists who performed weird
experiences on humans or animals. Which type of scientists? Mad
scientists who may have inspired movies or novels. Which type of weird
experiences? Experiences with drugs, transplants, radioactivity,... A
description of their experiences and a short biography is required.
Please exclude nazi scientists. Thanks in advance.

Here's one...
  
      
"Dr Robert White"
     
"In the 1960s, White and his surgical team attached an isolated brain
to the blood vessels on a dog's neck, to see if they could get the
second brain up and running while its normal brain was still intact.
They could, proving that the brain was an "immunologically sound"
organ -- that, unlike a kidney, it could be transplanted without
likelihood of the body rejecting it.
    
But the dog brain was really just a warm-up act for the monkey head.
In the 1970s, after a series of extensive experiments, White performed
the first successful brain transplant on a primate, surgically
attaching one monkey's head to another monkey's body. When the newly
attached monkey woke up, he tried to bite off the finger of an
attending doctor, and everyone cheered."
http://www.clevescene.com/issues/1999-12-09/putre.html
    
"This was later chronicled in a well-known children's book, "Curious
George Loses His Spinal Column."
http://www.dailybruin.ucla.edu/db/issues/99/11.01/view.lief.html