is the chinese five spice powder used in seasoning of all chinese dishes ?or just select ones?!

Five spice is used well with fatty meats like pork and duck. It is used in stir fried vegetables and as a spice rub for chicken, duck, pork and seafood.
Five spice is used in recipes for Cantonese roasted duck, as well as beef stew. It is also used as a marinade for Vietnamese broiled chicken.
Although this mixture is used in restaurant cooking, many Chinese households do not use it in day-to-day cooking.
A versatile seasoned salt can be easily made by stir-frying common salt with Five-spice powder under low heat in a dry pan until the spice and salt are well mixed.

http://www.food.com/recipe/chinese-five-…

Select ones. Certain BBQ and stews use it.

It's in some dishes, not all of them. I like to add it to meatballs.