I predict:

The Chinese will win the "AFV Dodging" event;
The North Koreans will win the "Hot Dog Eating" event (if real dogs are used);
The USA will win the "Close Quarters Combat" event;
and
The French will win the "Syncronized Miming" event.

In all seriousness, the Summer Olympics hold little interest, to me. I'll be at the next Winter Olympics in Vancouver, BC, Canada, for Women's Curling: