On Friday night, I, along with nearly 4,000 other people, walked barefoot over 12 feet of hot burning coals. At least 1,200 degrees. About eight or ten steps. Barefoot. It’s quite an experience.
You can imagine the legal disclaimer (edited for brevity):

In consideration of my participation in the seminar I agree to release and hold harmless RRI for any liability whatsoever for any damage or injury, personal or mental, which might incur as a result of my voluntary decision to walk barefoot on a bed of hot burning coals. I am fully aware and understand that, at a seminar sponsored by RRI and its promoters, I will be given the opportunity to walk barefoot on burning wood coals, which will range in temperature between 1,200 – 2,000 degrees Fahrenheit. If I do choose to walk on the coals, I affirm that I have not been coerced or persuaded in any way to do so, and I acknowledge that I make this decision voluntarily and without reservation. I am fully aware and acknowledge that there is no guarantee regarding my safe passage. I am fully aware that I may suffer serious injury, including severe burns or other physical or mental damage.

Thirty lanes of firewalkers, in the first floor of a Meadowlands NJ parking garage, at midnight, in the dark, with loud drums pounding, people chanting, and dancers with glow sticks twirling about. Kool-aid; drank.
Update: Hannah posts (with good links); I comment.