So when I first saw this clip on the Robinson blog, I was amazed that the Sesame folks had found a new, young puppeteer that does a dead-on Count Von Count. http://www.sesamestreet.org/parents/blog/-/blogs/the-woman-underneath-rosita On second viewing, I see that the puppeteer appears to be mouthing along to the voice of Jerry Nelson himself. I was just curious if any of you Muppet experts know...how do they do it? I thought it was common in puppetry to have a voice actor loop dialogue after the puppeteer's performance, which seems the most reasonable way to do it. But I see in the same clip, Kevin Clash lends a little Elmo vocal from the sidelines, so maybe Mr. Nelson is off-camera too - dressed up like the Count, I assume. Sorry, these technical things hang me up for no good reason, thought you might be some help. Hello and thanks!