After we've had pork loin or a beef roast for Sunday dinner, we usually have enough left for dinner the next day. I wrap the leftover meat in foil and put in the oven to heat while I prepare the other ingredients for Fajitas.
Source: This was just my idea of a way to use leftover roast without it tasting leftover.
Leftover pork roast can be reserved in a variety of ways. This is a page about recipes using leftover pork roast.
Our famous "lechon" (roast pig) can be cooked in a variety of ways. Whenever there's leftovers from previous parties, we store them in the freezer. The one I'm cooking is very similar to a sweet and sour recipe.