Joe the Plumber, the star of tonight's debate, may have a very interesting connection to John McCain. In fact, Joe the Plumber (Joe Wurzelbacher) of Cincinnati, Ohio may be related to one Robert Wurzelbacher of Cincinnati, Ohio, who happens to be Charles Keating's son-in-law.

Robert Wurzelbacher was implicated in the Keating 5 scandal, and sentenced to  40 months in prison in 1993.

Wurzelbacher is also a huge Republican donor.

So, let's find out a bit about Joe Wurzelbacher.