From Muppet Wiki

Joey Ahlbum is an animator and owner of the New York-based Ahlbum Animation Studios who has worked on Sesame Street since 1991. In the "Elmo's World" segments, Ahlbum designs and directs the various animated bits seen on Elmo's TV, i.e. "Hair Channel," "Baby Channel," etc., all of which feature the voice of Andrea Martin. Ahlbum has also created stand alone inserts, such as "Tall Short Texan," and supplied animated effects and opening titles for Big Bag.

Ahlbum's other work includes serving as a director on the MTV series Daria and collaborating with Mo Willems and others on the 2000 short film Life. Ahlbum has also illustrated for Sesame Street Magazine.