You can do it with a whole chicken, which is kind of cool. You can make pulled pork. Most frequently, I'll get a likely slab of beef, liberally garlic and black pepper in it, and voila. I salt it on the cutting board when it's done cooking and whispers apart when fork tines touch it.
One night, I pulled the beef out of the crock pot and it maintained its structural integrity for the ordeal, unusual in and of itself. When I laid it on the cutting board, it looked like this:
My fiancé, dear heart, came to look. "Holy crap, it does look like Cthulhu."
We stood and admired it for a few moments, and I took pictures (they pretty much all look like that one.) We asked said housemate if he was going to come and see. He said "No thanks, I'd like to keep my sanity."
(for reference, the title quote translates to "In his house at R'lyeh, dead Cthulhu waits dreaming." You can read Call of Cthluhu by H.P. Lovecraft at hplovecraft.com. You can also listen to it read on Youtube, which is freaking cool.