[youtube=http://www.youtube.com/watch?v=0o7GlncFG9A] Sometimes it's enough to deliver a message.
You don't want the ad to get in the way of the message.
I think this ad does a good job with that. It's not innovative or particularly interesting, except in its simplicity. It doesn't try too hard or give the usual negative political ad tricks (harsh music, "loud" graphics, a hard voice attacking, I even expected the backwards footage given it's called "Backwards Bob," and was pleasantly surprised not to get it). I think it's better because it keeps it low key and matter of fact.
As an audience member I get the point, but I'm not hit over the head with it.
I also think it's interesting because it's a one minute ad on choice -- when was the last time you saw that? Of course Virginia has an interesting history of choice and governor's races.
In a political campaign, sometimes you need cavalry riding to the rescue, sometimes you need infantry in the form a solid message delivery.