Before President Obama delivers his farewell address to the nation tonight, take a look back at some of his most memorable speeches — from his keynote during the 2004 Democratic National Convention to his 2012 election victory speech. More on Obama's legacy: http://nbcnews.to/2iRPwUV | NBC News

16K views · 1.1K reactions | Former President Barack Obama reflects on President Joe Biden's legacy. "History will remember Joe Biden as a president who defended democracy at a moment of great danger. And I am proud to call him my president, but I am even prouder to call him my friend." | MSNBC | Facebook

Barack Obama: “Donald Trump hasn’t grown into the job because he can’t and the consequences of that failure are severe. 170,000 Americans dead, millions of jobs gone…our worst impulses unleashed, our proud reputation around the world badly diminished.” abcn.ws/2E87aAf | ABC News Live

146K views | The best moments from President Obama's farewell speech. | The Digital Spoke | Facebook

97K views · 506 reactions | Time-lapse video shows thousands waiting line for tickets to Pres. Barack Obama's farewell speech in Chicago abcn.ws/2iRNmUW | ABC News Politics | Facebook