Watch this video about the fire and knife throwing on HowStuffWorks. Hawaii's North Shore got extra hot this weekend at the Polynesian Cultural Center's 15th Annual World Fireknife Championships. The four-day competition concluded Sunday with the crowning of Orlando's Andrew "Umi" Sexton as the best of the best with a stunning routine of flaming knives flying at breakneck speed. This video is courtesy of MultiVu.