Could Romney Pick Petraeus?

The rumors started earlier today when Drudge Report said that General David Petraeus was on Mitt Romney's short list for VP.  Petraeus is currently the director of the CIA.

According to some, President Obama is worried about the kind of impact that he could have on the race.  The White House has denied that report.

What do you think?  Is this a good or bad pick for Mitt Romney?