JibJab produced the best ad of the 2004 Presidential campaign - a version of This Land Is Our Land played by Kerry and Bush; this is their offering for 2008:
The former President says: "I think it would be a great thing if we had an election year where you had two people who loved this country and were devoted to the interest of this country. And people could actually ask themselves who is right on these issues, instead of all this other stuff that always seems to intrude itself on our politics."
The Illinois Senator accuses the former President of "troubling" remarks and of making things up, "mischaracterising", of making statements "that aren't supported by the facts". There need to be standards of discourse, he continues, and a former President has a special responsibility.
Click here for Bill Clinton's attack on the Obama "fairy tale".