I got this recipe from the Sister's Cafe. I am a sucker for sweet + pork anything, so it's one of my favorites.
adapted from the Sister's Cafe
3 lb pork roast
1/2 c worcestershire sauce (the original recipe calls for 1 c. - I think it's unnecessary to use an entire cup)
1/2 c beef broth (to make up for the above)
1 c brown sugar
1 tsp oregano
1 tsp powdered ginger
1 tsp chili powder
1 tsp garlic powder
2 Tbl minced onions
Cook all ingredients in a crock pot on low for 6-8 hrs. One hour before serving, remove roast and shred it. Dump out juices, reserving about a cup. In crock pot mix 1 c. red enchilada sauce and 1 cup brown sugar, then add shredded pork. Add 1/2 - 1 cup of juices to your liking (the original recipe doesn't have you add any of the juice back in, but I think it adds to the flavor). Serve on tortillas with beans and rice, sour cream, cheese, etc.