Fiddler by Stephen Cosgrove is unique, in my experience. I don't think I've ever seen selfishness addressed quite this way. A rhyming, fiddle-playing bear saunters into the land of Barely There. He politely requests food from the three bears who live in this scenic locale-suspicious, selfish, and each barricaded in their own cabin. Fiddler finds a problem with each of their foods which can only be solved by sharing with the others. Then he saunters off, leaving a true community behind him.