You know what, I'm a little bored, I'll explain it...

In elementary school they used the roller skates and wall example to explain the third law. The example states, if you are wearing a pair of skates and you push a wall, the oppisite reaction will push you away from the wall.

This is grossly wrong. First, it implies that your initial push had a direction. First off, your arm doesn't create a directional force. When you "push off" of a wall, your arm is extending between you and the wall. You have a much lower moment of inertia, so you move. The wall doesn't.

With the horse and cart example mentioned above. The cart never pulls on the horse. The horse pulls on the cart. The horse is strong enough to overcome the carts moment of inertia. 'Nuff said.

There is the example of the falling ball. If the ball falls and hits the ground, it will bounce. It is bouncing because the impact creates an action, and the reaction pushes the ball away from the ground. This is flawed, too. The ball and the ground will deform apon impact, and when they reform they will push against each other. This goes back to you and your skates. The ball looses that fight and bounces. This is not the third law, this is elasticity.

If the third law exists, I've never seen an example of it.

Any example presented to me can be explained with elasticity, conservation of energy, inertia, and the fact that most things don't actually create a directed force, they just appear to.

Hope that makes sense.