Had posted a pic many months ago but that was not a good one. Here is a better one with a flower.
Tradescantia sillamontana? http://images.google.com/images?q=tradescantia+sillamontana&hl=en&lr=lang_en&ie=UTF-8&sa=N&tab=wi
Looks a lot like one I got in a trade, 'Red Cloud'... at least I think that's the one from trade that bloomed.