The lone Republican vote for the House health care package, a former Jesuit seminarian who represents Louisiana's second district. From his website:

I read the versions of the House [health reform] bill. I listened to the countless stories of Orleans and Jefferson Parish citizens whose health care costs are exploding if they are able to obtain health care at all. Louisianans needs real options for primary care, for mental health care, and for expanded health care for seniors and children..." I have always said that I would put aside partisan wrangling to do the business of the people. My vote tonight was based on my priority of doing what is best for my constituents."

He seems like a fellow who means it, and for a freshman rep to buck the entire party on this is pretty remarkable. Maybe this has something to do with it, from his Wikipedia entry:

Cao is the poorest member of Louisiana's delegation (including the state's two senators) in Congress: as of 2009 his assets were no greater than $195,000 and his potential liabilities mounting to $215,000, including student loans for himself and his wife.