yeah...
goats: milk, meat, some of them hair, however you can't really get milk AND hair from the same animal.
Animal, Vegetable, Miracle was an amazing book.
"Yes, potatoes are a root vegetable. Can you think of another root vegetable?"
*boy thinks hard* "Spaghetti?"
Goats give you beautiful pastures. Especially if you have horses. However, you need a good fence (just because it keeps in a horse or sheep doesn't mean it'll keep a goat) and be prepared to sacrifice anything that isn't grass.
Sheep: Only a couple steps up from insects, brain wise. They are cute, and fuzzy, and tasty.
If you get lambs for eating, then you don't have to keep them long or shear them often.