James Randi has an international reputation as a magician and escape artist, but he is perhaps best known as the world's most tireless investigator and demystifier of paranormal and pseudoscientific claims.
Randi has pursued "psychic" spoonbenders, exposed the dirty tricks of faith healers, investigated homeopathic water "with a memory," and generally been a thorn in the sides of those who try to pull the wool over the public's eyes in the name of the supernatural. He has received numerous awards and recognitions, including a MacArthur "genius" grant in 1986. He's the author of numerous books, including The Truth About Uri Geller, The Faith Healers, Flim-Flam!, and An Encyclopedia of Claims, Frauds, and Hoaxes of the Occult and Supernatural.
In 1996, the James Randi Education Foundation was established to further Randi's work. Randi's long-standing challenge to psychics now stands as a $1,000,000 prize administered by the Foundation. It remains unclaimed.