Libby once took me to an a capella group in college, and I thought it was pretty damn cool. For some reason I like a capella and beat boxing. Weird, I know.
This guy did 4 different parts and his characters interacted with each other... that's gotta be time consuming. I think he's a bigger geek than the two of us combined.
And, yes, I've been known to be geeky on occasion.