Have you ever been starstruck?

When we were at the the CMT Awards this year, Robert Plant was there. What an icon, I love him . . . But I can't go up and speak to him, because I don't want to seem like a goob. I just want to go up and be like, 'Hey, I just wanted to meet you, and I've been a big fan for a long time. I love your voice.' Be cool, ya know? Or, do you gush like you really want to, which is, 'Oh my God! I can't believe it's you! I love what you're doing, and I am so glad you're in country music. What you and Alison Krauss are doing is fantastic!'