Just try to stop eating these, I dare you.
Great leftovers--if you have any!

4 pounds pork or beef roast
2 (4 ounce) cans diced green chilies, drained
1/4 cup chili powder
1 teaspoon dried oregano
1 teaspoon taco seasoning
2 teaspoons minced garlic
1 1/2 teaspoons salt, or to taste
Tortillas or taco shells, if desired
Preheat the oven to 300 degrees F.
Place the roast on top of a large piece of aluminum foil. In a small bowl, stir together the green chiles, chili powder, oregano, taco seasoning and garlic. Rub onto the roast. Wrap foil around the roast so that it is completely covered, using additional aluminum foil if necessary. Place on top of a roasting rack in a baking dish, or place a cookie sheet on an oven rack below to catch any leaks.
Roast the meat for 3 1/2 to 4 hours in the preheated oven, until falling apart. Remove from the oven, and shred into small pieces using two forks. Season with salt to taste.
Serve with tortillas or in taco shells.