CactiGuide.com

This is a photo soon after I bought this dish garden in a Hypertufa pot at the Connecticut Cactus and Succulent Society show and sale in 2009. I still have the greyish rosette succulent on the right side sending out runners. I know it is very common, but I really don't know what it is. Can anyone help me?
And here it is blooming a few months later.

By looking at Llifle.com Succulents I'm thinking its in the Crassulaceae. Orostachys and Rosularia both have flower stalks that kind of look like my plant.

Those that don't have flower stalks like mine at all are: Aeonium, Cotyledon, Crassula, Echeveria, Graptopetalum, Graptosedum, Graptoveria

I'm still not sure what I have.

Looks like a popular cold hardy succulent known as Orostachys boehmeri

Tom, that's it for sure. Thanks very much. It has been growing outdoors in a container since 2009. It survives under snow and ice.