Pulled Pork BBQ, part 2

This assumes you've already made the Dry Rub posted below.  This is adapted from Tyler Florence's Oven-Roasted Pulled Pork Sandwiches, but rather than baking the roast in the oven at 300F for 6+ hours, i use my crockpot.

Crockpot Pulled Pork

1 recipe BBQ Dry Rub

1 (5-7#) pork roast, preferably shoulder or Boston butt

1. Rub the spice blend all over the pork & marinate for as long as you have time for, as little as 1 hour or up to overnight, covered, in the refrigerator.
   
2. Brown roast on all sides, either on outdoor grill, or in a large skillet on the stove.
3. Place roast in large crockpot, & cook on low for 8-14 hours, or on high 4-7 hours.  Basically, cook the pork until it's falling apart & an instand-read thermometer inserted into the thickest part registers 170F.  In my experience, it is not possible to overcook the roast this way.
4. Remove the roast from crockpot & pour accumulated juices into a measuring cup to allow fat to separate from drippings (reserve for sauce).
5. While roast is still warm, take 2 forks & "pull" the meat to form shreds, steadying the meat with 1 fork & pulling it away with the other.