Chicken and Vegetable Rice-One skillet, and use up leftover chicken

This is one of Josh's creations, and a staple at our house. It basically chicken and rice soup, without the soup part. He was trying to re-create something he saw on a travel show about Thailand. A basic rice chicken and veggie dish that you can put any kind of sauce on. We like Hoisin, or Sweet Chili Thai sauce. Plain is great too.

Saute in a skillet in some olive oil:
1 onion
3 carrots
1-2 stalks of celery
Salt and pepper to taste
Chopping them small with a chopper makes the veggies cook quicker, also Garner will eat carrots etc if they are small enough.
When veggies are tender, put in 1 cup rice uncooked, and let it toast with the veggies on med high for a min or so.
Add 2.5 cups of whatever you prefer of a water/broth/stock combination.
Bring to a simmer, then cover and turn all the way to low. Let it cook about 15 min, or until all the water is gone. DON'T Stir it during cooking. That's the secret to great rice. Dig into a corner to check the water level if you simply must.
Stir in leftover cut up chicken or turkey, enough to warm it up.
Serve plain, or with any number of sauces!