Barack Obama Welcomes Oprah to Iowa

Barack Obama: Closing Argument (Full Speech)

Des Moines, Iowa: A grassroots event with President Obama - full speech

Barack Obama on Tavis Smiley

Barack Obama's Speech at the Jefferson Jackson Dinner

LA Rally: Oprah Winfrey

Barack Obama Speaks at Dr. King's Church

A Day on the Campaign Trail - Barack Obama on Nightline

Oprah & Michelle Introduce Barack Obama (Full Oprah Speech)

Barack Obama on Hardball - MSNBC

Barack Obama: Our Moment Is Now, full speech

President Barack Obama in Conversation with Heather Cox Richardson | The Connecticut Forum

Four Days in Denver: Behind the Scenes at the 2008 DNC

Ted Kennedy Endorses Barack Obama

Maya Angelou Introduces Michelle Obama

Barack Obama's Presidential Announcement

President Obama Tells the Story of "Fired Up! Ready to Go!" at His Final Rally

Barack Obama: South Carolina Victory Speech

Barack Returns to Iowa

Barack Obama: 'A More Perfect Union' (Full Speech)

President Barack Obama in Conversation with Steve Scully | Jefferson Educational Society