K.P.
Use a Boston Pork Butt- go ahead and giggle, but it shreds really well. I do mine on 200 in the oven for an entire day and it's amazing! NO JAR SAUCE with spicing it up! Add brown sugar, ketchup and 1/2 a can of coke. It will make it sweet and tangy.
In the oven, you let it cook all day in a water bath and add the sauce after shredding for the last hour. Google some recipes!