This dude isnt as rad as I first thought, but whatever:
"An abalone diver on the NSW south coast has fought off a 3m shark in an amazing story of survival.
The 41-year-old swam into the jaws of the Great White, then poked it in the eye until he was freed.
Eric Nerhus, 41, emerged from the water with a bloodied face and puncture wounds to his back, chest and arm. He was offshore this morning, diving for abalone in weeds, when he swam head-first into a Great White Shark. Reports said the front of his body was almost swallowed whole, but his arm was left free and he began poking the shark in the eye."
http://au.news.yahoo.com/070123/23/1261e.html