Wall Street and the crisis

Propublica series: The Wall Street Money Machine
NYT: Naming Culprits in the Financial Crisis | report
WSJ: Senate Report Lays Bare Mortgage Mess (Chinese ver.)

The Senate report alleges that Goldman then undertook a multibillion dollar series of trades to hedge its bullish bets by selling mortgage-related trades to allegedly unsuspecting investors. The head of Goldman's mortgage unit recommended managers of Goldman's sales force issue "ginormous" sales credits to those who could find investors anywhere in the world.

wiki: Magnetar Capital