Here is my go to recipe for Big Crowds for http://www.lifeasmom.com/. We serve it at almost all our pot luck or get togethers we have. You take a Pork Loin roast. We get the ones from Costco, cut it in half and cook it with 2 lrg chopped onions for 6-8 hours on low. Then I take a couple of forks and tear it apart. Then I mix some BBQ sauce with some apple sauce (or if I have any apple butter) and pour it over the pork. Let that simmer on low for a couple hours until the sauce is incorporated with the pork. I have left it on for 6 hours and it just tastes better. Serve with buns, some salad and your set.
Hope you enjoy it!