Pulled Pork Sandwiches

My extended family has eaten a lot of pulled pork at our house for birthday parties, but I don't think they are complaining!  I use my dry rub for ribs, plus a little Worcestershire sauce, yielding the best foolproof pulled pork sandwiches.  

1 pork shoulder roast (3-4 lb.)
8-10 dashes of Worcestershire sauce
1/2 c. dry rub from dry-rub-pork-ribs.html

Place shoulder roast in crock pot.  Sprinkle evenly with Worcestershire sauce.  Rub evenly with dry rub spice mix.  Cook on low for 10-12 hours, shredding when meat easily falls off bone.  Serve on the best sandwich buns you can find.