Two Packet Roast and Gravy

This is maybe not even recipe-worthy, but it's an easy way to make great roast for open-faced sandwiches, etc.

Beef arm roast or chuck roast (or whatever roast you like)
1 packet Au Jus mix
1 packet ranch dressing mix
1/2 cup water (if you wish)

Put roast in slowcooker. Sprinkle with both packet mixes. Add in the water if desired. Cook on low for 6-8 hours until done. Shred with fork and serve with juices.