Well I have said here before, the native tree commonly called Serviceberry, Saskatoon berry, or June berry (Amelanchier alnifolia), is a small to mid sized, graceful, airy native tree of Wyoming. I think it would make a great specimen tree in the landscape, especially under areas with large, towering trees.
Over at Home Made Wilderness I saw a link to the article Berries Hold Promise for Diabetes where it is explained that some research will be underway to study the beneficial effects of Serviceberry on helping the pancreas to stabilize sugar levels.