I just did one of those impulse buys at a nearby nursery. The owners told me the plant was Sedum 'Gold Dots'. Cute little thing that looks like a great rock garden plant. They said it wasn't hardy here, but that it could be placed in part shade and brought in as a house plant in fall. I can find almost nothing about it online except for a brief mention at the Scott Arboretum website. Trying to figure out where to put it outside (in a container), how much light it needs and what it's hardiness is. If anyone has the scoop on this lovely little plant, I'd love to hear the details.