This is a combo I learned from my mom. It's a nice to way to spice up an old standby. I think she uses store bought bbq sauce. I tried making my own, and it was pretty darn tasty. And produced three meals for Mark and me.
1 beef pot roast
1 cup ketchup
1/2 cup dijon mustard
1/2 cup honey
1/2 cup cider vinegar
2 Tbsp soy sauce
1 onion-diced
4 tsp. garlic-minced
chili powder
cayenne pepper
salt & pepper
Heat some cooking oil in a shallow pan and brown the outside of the pot roast. Place meat in a slow cooker with the rest of the ingredients. Cook on high for 3 hours. Switch to low for 3 hours. Shred and serve on rolls.