I've made beef broth a great number of times, but always on the stove. Simmer bones and veggies for 6 to 8 hours. This time, I pilled beef ribs in the crock pot, covered with water and let it simmer on low for 24 hours (as per instructions at http://www.foodrenegade.com/, I think). Wow, good looking stuff.
I'm venturing out on a limb and put the bones back into the crock pot with water for a second run.... I'll let you know how it goes!
About half the tomato and pepper seedlings put out last night. They look great this morning... here's to hoping I don't have to compete with any little critters for them.