Bill Richardson - That's my guy.

Bill Richardson for President Exploratory Committee
The most experienced Dem candidate, and as far as the ones that I've seen, the one most likely the be an honest-to-God human being. A down-to-earth type with a sense of humor, and I get the feeling that he wouldn't shame the United States as somebody's been doing lately.

Current Governor of New Mexico (2nd term), 15 years in Congress, former Secretary of Energy under Clinton, former Ambassador to the UN, nominated 4 times for the Nobel Peace prize for negotiating the release of hostages, servicemen, and political prisoners. He actually has experience with diplomacy, something sorely needed these days.

From the article Beyond Hillary and Obama:

"At home, Bill Richardson’s accomplishments have been equally incredible. He has followed a centrist course in government, economically conservative but socially liberal. As governor of New Mexico, he balanced the state budget while cutting taxes for the middle class and increasing funding for education. He eliminated over $200 million of bureaucratic inefficiencies. His statewide energy policy has made New Mexico one of the few states that meet the requirements of the 1997 Kyoto Treaty. During his time in office, the New Mexican economy has been revitalized with the creation of 84,000 new jobs, many of which have been in high-tech industries. All the while, he has been a strong social progressive, pushing New Mexico to legalize civil unions while Democrats in other states have done nothing."