Cut off any visible fat on the pork. Season with salt and pepper and place in a 5-6 quart crock pot. Pour brown sugar and salsa over the top.
Add the lid, then cook on low for 7 hours, or high for 5.
Remove pork from the pot and place in a baking dish. (It works better than a cutting board because it catches the juices.) Use two forks to shred apart.
Skim off the fat from the top of the liquid in the pot. Return shredded meat to the crockpot and cook for another 30-60 minutes, or until heated through.
Serve with a slotted spoon, with all the fixins for tacos, burritos, or salad.
Notes
You can use pork tenderloin, boneless pork ribs, or pork sirloin roast. They all work fabulously
Suggested toppings: flour tortillas, cheese, shredded lettuce, pico or salsa, guacamole, black beans, cilantro lime rice, and cilantro lime ranch dressing.