A $2.4 Trillion War
You're not hallucinating. I doubt if George W. Bush himself ever dreamed of spending so much of other people's money:
According to the CBO'S report, the country has spent $604 billion since 2001. The total amount of money requested for 2008 alone is up to $196 billion, nearly a quarter of what's been spent over the past five years. At that rate, we'll sail past $2 trillion by 2014. And that's not counting interest.
CBO analysis (PDF) here.