I was just watching the weekend hardball and saw an ad that I thought was extremely powerfull. My wife was practically in tears from just seeing the last half of it out of the corner of her eye. There's not a line of dialog in it, and they don't even mention Obama until the very end.
This site appears to be a grassroots organization aimed primarily at the housing crisis. They're centered in Denver. I'll try to embed the video, or check it out: American Tune (progressivefuture.org).