Balut:
http://www.asiacuisine.com.sg/Nacws/1998/9/314/
"The wayward nature of the itik (native Filipino duck) must be the reason for an unusual Filipino delicacy - balut - a fertilised egg with a partially developed duckling, which is eaten boiled. Balut is a very nutritious snack food, which most Filipinos appreciate. However, non-Filipinos generally take a bit of convincing before taking their first bite."
It was on Fear Factor once.