BFM has had a lot of searches on this - yes, they do exist! Check with your local Dem/Obama office if you are out and about this weekend, and get 'em up in your yard, pronto.
A new CureMichigan commercial is supposed to be out today. I haven't had the TV on (getting tired of commercials whining about that crazy troublemaker Mark Schauer that voted to save your local police department, you ingrates) so I don't know if it's running yet or not. Will put it up when they get it out there.
Until then... do what you can to help out!