For brisket (cause there is always ALOT leftover) I like to make beef enchiladas. Throw the whole piece of brisket into a crock-pot with some coarse chopped onions, green chiles or pasilla/anchos, a few serranos, some beef base, a splash of red wine or vermouth, cumin, REAL chile powder and some cayenne, and a can or two of El Pato (yellow or green, doesn't matter). Low for 8 hours, high for about 4. Comes out like shredded beef. Roll into tortillas with generous amounts of cheese and top with your favorite enchilada sauce. 425 oven for about 45 minutes.
Pork butt makes great carnitas tacos. Shred finely and top with cabbage/onion/cilantro mix, white sauce (like fish tacos), cheese and salsa or hot sauce.
Neighbors and co-workers.
For my chicken and ribs - they love me for it!