Wikipedia bio of Barack Obama
http://en.wikipedia.org/wiki/Barack_Obama#Early_life_and_career
He also podcasts from his Senate web site and personally participates in online discussions.

"...Hill Monitor, a nonpartisan vote tracking group, ranked Obama fourth in frequency of voting with the majority of his party during the 109th Congress, as of the current legislative recess for midterm elections. Obama's rank follows Democratic Party Senators Mikulski (D-MD), Sarbanes (D-MD), and Durbin (D-IL)

Music related ;-)
Obama has been mentioned in songs by Neil Young[89] and the rapper Common who, in the remix of the Jadakiss hit "Why", asked "Why is Bush acting like he trying to get Osama? Why don't we impeach him and elect Obama?"


From the Keynote Address at the Democratic Convention:
After describing his maternal grandfather's experiences as a World War II veteran and a beneficiary of the New Deal's FHA and GI Bill programs, Obama said:


No, people don't expect government to solve all their problems. But they sense, deep in their bones, that with just a slight change in priorities, we can make sure that every child in America has a decent shot at life, and that the doors of opportunity remain open to all. They know we can do better. And they want that choice.


Questioning the Bush administration's handling of the Iraq War, Obama spoke of an enlisted Marine, Corporal Seamus Ahern from East Moline, Illinois, asking, "Are we serving Seamus as well as he was serving us?" He continued:


When we send our young men and women into harm's way, we have a solemn obligation not to fudge the numbers or shade the truth about why they're going, to care for their families while they're gone, to tend to the soldiers upon their return, and to never ever go to war without enough troops to win the war, secure the peace, and earn the respect of the world.


Finally he spoke for national unity:


The pundits like to slice-and-dice our country into Red States and Blue States; Red States for Republicans, Blue States for Democrats. But I've got news for them, too. We worship an awesome God in the Blue States, and we don't like federal agents poking around our libraries in the Red States. We coach Little League in the Blue States and have gay friends in the Red States. There are patriots who opposed the war in Iraq and patriots who supported it. We are one people, all of us pledging allegiance to the stars and stripes, all of us defending the United States of America.