Today on Good Morning America, Diane Sawyer was forced to face off with Dr. Mehmet Oz by keeping her arm in an icy bucket of water until she couldn't stand the pain anymore.

This very scientific test was ostensibly performed to determine whether men or women have a higher pain threshol, but sometimes we wonder if the GMA producers just have it in for Diane. They seem to delight in finding humiliating assignments for her, such as the time she was given a fish pedicure, or when she had to watch a Baby Alive doll "poop" in a toilet. Clip at left.