Combine all but the roast in a small bowl.
Rub the spice mixture over the roast, getting all sides.
Place roast into a slow cooker and cook on low for 8-10 hours or until fall-apart tender.
Remove roast (carefully, as it will tend to fall apart) to a cutting board and chop or shred as desired. Return to the slow cooker for serving.
Note: The meat gets even better the next day. I made this on a Sunday for several easy weekday meals.