I got this recipe from Veronica Haymore. I think she said she got it from Tiffany Johnson. It is super easy and so very, very good.
2 lb. chuck roast
1/2 cup brown sugar
2-3 tablespoons Worcestershire sauce
1 1/2 teaspoons garlic salt
2 teaspoons Cajun seasoning*
juice of two limes**
Combine everything in a crock pot and cook on high for 6 hours. Shred meat and serve with taco fixings. You can adjust the quantity of seasoning if you have a bigger/smaller roast.
*Dinosaur Barbecue makes a Cajun seasoning that is really great. You can buy it at Wegman's
**I keep a bottle of lime juice in the fridge and just use that. Some would turn up there nose at that, but it is just easier. I use about 1/3 of a cup.