Sen. Carl Levin of Michigan didn't hold back this week while grilling top Goldman Sachs representatives about the firm's questionable mortgage practices as the nation's housing market started to unravel in 2007.

Levin, who chairs the Permanent Subcommittee on Investigations, read from an email in which a Goldman Sachs executive referred to one mortgage deal as "shi**y."

He then questioned Daniel Sparks, the former head of Goldman's mortgage department, about that e-mail.

Take a listen and tell us what you think.