With the fiscal cliff coverage focused on Democrats, Republicans and the rich, a key negotiating partner has been left out: corporations, and the roughly $200 billion in corporate handouts, aka "tax extenders," at stake. Matt Stoller looks at eight huge, under-reported subsidies Obama successfully used as carrots in the fight, including $9 billion for off-shore financing loopholes, $1.6 billion for Goldman's fancy new headquarters, and safety incentives to persuade mining companies not to kill their workers.