Mel's Beef Dip Sandwiches

I just buy a cheap roast, I throw it in the crock pot with a can of any beer I have on hand, a beef boulion cube, one sliced onion, 1 packet of mccormicks montreal steak seasonings and a few dashes of worsteshier sauce. I cook it all day, shred it and put it on toasted hoagies. I use the extra juice for our au jus.