At first I thought it is a viola. Violas (johnny jump-ups, hearts-ease) can get leggy -- they tend to flop over when they get too tall. However, a closer look makes me think it's torenia, although the foliage isn't quite the same as on mine.

Everyone has been so helpful, so I thought I'd return with another unidentified flower. http://www.flickr.com/photos/ericmmartin/3365604150/ This flower is so pretty, I'd love to know what it is! I still am not sure what #13 is from my previous post, if anyone has any ideas. Appreciate the help!

You're lucky. I tried growing it last year and had terrible luck with it. It does seem to be a spreader, though. I had it in the back yard in two spots, both did poorly, failing to thrive and finally dying. This year I found a seedling in the front yard (100 feet away with a house in between)in stone mulch. I'm leaving it there to see what it does. Maybe neglect and the heat off the stones will be a charm!

GW has a plant identification forum. Name That Plant!. I am not familiar with it so cannot attest to its usefulness.