So as a child my mom would occasionally use a crockpot to make a stew. It wasn't until recently that I realized just how versatile a crockpot was. You can make anything in them from soups, to stews, to dips and lasagna. Amazing.
Where does the savings come in you ask? Well in a few ways. First of all you can dump the ingredients into a crock pot in the morning and it's all ready when you come home in the evening. This makes it much harder to rationalize going out to dinner because you are too tired to cook.
Also you can use much cheaper cuts of meat in the crockpot and by the time they are finished cooking they are literally falling off of the bone.
Personally I prefer to use the crockpot to cook a roast or whole chicken instead of the ones that involve several ingredients because well, I'm lazy.
You don't need a recipe for these. Simply add 2-4 cups of liquid either water or broth and put in your meat. Cook on low for 8-10 hours. It is really impossible to over cook. Most crock pots have a "warm" feature that will keep your food hot, but stop cooking it. Very helpful if you will be away from home longer than the recipe takes to cook.
For some awesome recipes and more details about crockpot cooking check-out http://crockpot365.blogspot.com/