J.P.
I know this one!!!! Girlfriend, CROCK POT!!! I've done this twice a month for about a year. I keep shredded beef in the fridge and it always gets gobbled up. For the party, cook it the day or two before, then fridge it. You can heat it in a skillet with a tiny bit of oil on med-high heat.
My recipe:
Get your roast (whatever's on sale) unwrapped
Heat a big pot --EMPTY--ON HIGH
On a plate, mix a bunch of salt, garlic powder, and pepper together
Then dip your roast on the salt plate and get the mix all over the meat
Then put it in the hot pot and let each side brown about two minutes
Turn that off
Put the meat in the crock pot
Add half an onion, 2 cloves of garlic, a can of tomato sauce and if you have it 1/2 a pack of onion soup mix
Fill with water to cover the meat
Cook high 3-4 hours, low 4-6 hours or until falls apart with your fork. When near done, taste the juice and season to your liking.
Good luck!! Let me know if you try this and if so, how it comes out for you!!