2 things on this video:
1) If you close your eyes and imagine Morgan Freeman's voice slowly and beautifully saying "Jonah Jonah Bo-Bonah..." and don't immediately start to chuckle then you're dead inside. This guy's voice can literally make anything sound awesome, which is probably why it was so awkward for Jonah. He'd never heard the Name-Game Song (no clue what it's really called, and apparently they don't know either, suggested by Morgan's insistence that Jonah "do him") spoken with so much eloquence and soothing timbre, rendering an otherwise silly interaction a weirdly intense moment.
2) Everyone knows about the Graham Norton Show in America, right? If you don't, start googling this funny Irish guy's little talk show. He always has awesome guests and pretty hilarious interviews. He's one of those people who somehow makes celebrities feel like they're human long enough to get them to tell some funny and relatively embarrassing story, which is always a good time.
And now, more of Morgan Freeman Talking: