Ch-ch-check out the video (above) to see the expression on Ryan's face when the Biebs tells him how old he was when he started watching American Idol! Seacrest out to pasture!
You can see the whole interview on Rock Center with Brian Williams Thursday at 10pm/9 central!
But until then, we have one more bonus clip to whet your appetite! The Biebs and his mom talking about how they turned a behavior problem into billion dollar stardom!
Check it out after the jump!