Uncharted 2: Among Thieves Easter eggs

Playing with Tibetan kids
When you are in the Tibet village you are able to play with some of the kids. You will come a across kids who are playing soccer and if you go up to the soccer ball and press 'Triangle' drake will kick the ball back. Also further down the village are kids hiding behind a rock wall, if you go up to them and press 'Triangle' drake will try and scare them.