This was a video sent to his supporters, I’m not even sure it was meant to be a “campaign ad” as you and Allahpundit are suggesting.
In any case, it made me laugh, because it kind of suits Block. All it needed was some Gunsmoke music in the background
This is still my favorite Cain commercial: http://www.youtube.com/user/thehermancain#p/u/28/oZ0M_rEcHls
If it was just for Cain supporters, it's a waste of whatever money was spent on it, as they are for him anyway.