From ABC:
ABC News has learned that President-elect Obama has offered the White House chief of staff job to Rep. Rahm Emanuel, D-Ill.
Emanuel, a knowledgeable source tells ABC News, has not yet given his answer. The sharp-tongued, sharp-elbowed, keenly intelligent veteran of the Clinton White House is said to have ambitions to some day be Speaker of the House. But he also has a keen sense of "duty."
LGT Article
Will update as events develop
UPDATE 1:
CNN mentions the story in passing, but says it's not confirmed
Via CNN Political Ticker
UPDATE 2:
HuffPo has it, also (thanks go to MJHJTR88)
http://www.huffingtonpost.com/...
Also George Stephanopolous was speculating on it last night. Here's his $0.02:
I probably didn't spell Stephanopolous right