From the Boston Globe:

Attorney General Martha Coakley went on the offensive today, saying that her Republican opponent would move the country backward if Massachusetts residents elected him to the US Senate next week.
Coakley made the comments just hours before of the race’s final debate tonight, marking a much more aggressive tone for the Democratic nominee. Early in the race, Coakley would barely utter Republican nominee Scott Brown’s name. This morning, she said it about a dozen times in 10 minutes. She criticized his stance on health care, gay marriage, and taxes as she sought to link Brown to former president George W. Bush.

So Coakley wants to tag Brown as Bush-Cheney II? Shrug. Thanks to this ad, voters are starting to see Brown as a nice, conservative slice of JFK.