Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      pounds        boneless chuck roast
   1 1/2  cups          ketchup
   2      tablespoons   Dijon-style mustard
     1/4  cup           packed brown sugar
     1/4  cup           red wine vinegar
   2      tablespoons   Worcestershire sauce
   1      teaspoon      liquid smoke flavoring
     1/2  teaspoon      salt
     1/4  teaspoon      pepper
     1/4  teaspoon      garlic powder

Preparation:

Place chuck roast in Crock-Pot. Combine remaining ingredients in mixing bowl. Pour barbecue sauce mixture over chuck roast. Cover and cook on Low 8 to 10 hours or 4 to 5 hours on HIGH. Remove chuck roast from Crock-Pot and shred meat. Place shredded meat back in Crock-Pot. Stir meat to evenly coat with sauce. Spoon meat onto sandwich buns and top with additional barbecue sauce if desired.