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One, two, three peanut butter and jelly sandwiches! Sound familiar? You probably grew up watching Count von Count on "Sesame Street" -- and you're probably sad to hear that Jerry Nelson, the voice behind the puppet, died last Thursday night at age 78, according to The Associated Press.

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"Every description of his characters describes Jerry as well," "Sesame Street" executive producer Carol-Lynn Parente told the AP. "Silly, funny, vulnerable, passionate and musical, for sure. That voice of his was superb." She continued, "We're having a rough day on the Street."

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Here's a little piece of trivia for you: The Count is a vampire modeled after Bela Lugosi's interpretation of Count Dracula (hence that famous laugh). Whether you ... want ... Cookie or prefer collecting paper clips, let us know: Who's your favorite "Sesame Street" character?