The Roots' regular "Slow Jam The News" segment on Jimmy Fallon's show is always a hit, but they may never top the one they pulled off last night. Jimmy warmed up the audience with a little talk on student loans, but instead of ending it with a punchline, he and Black Thought decide to break out into a slow jam, and who better to join than President Obama himself? We've all seen Fallon crack up during comedy sketches, but Obama had absolutely no problem keeping a straight face.

[via LateNightWithJimmyFallon]