Former Michigan governor Jennifer Granholm was a surprise show-stopper Thursday night, delivering an emphatic defense of President Obama's economic policies. 

Granholm pumped her fist and shouted out the number of jobs created under Obama, state by state. She had a great one-liner playing off the car elevator in Mitt Romney's La Jolla home: "In Romney's world, the cars get the elevators and the workers get the shaft." 

How did this fiery speech play to independent voters? Unclear. But it likely gave Granholm a boost in her current gig as a host on Al Gore's Current TV.