Joseph Mazzarino has been performing and writing for Sesame Street since 1990. He has co-written screenplays including Muppets in Space and The Adventures of Elmo in Grouchland, as well as written and performed in the first ever Henson direct-to-video feature, Kermit’s Swamp Years.

Mazzarino has won multiple Emmy Awards for his work on Sesame Street including Writing, Directing and Performer in a Children’s Series. Mazzarino won the Writer’s Guild Award for Children’s Episodic & Specials for Elmo’s Christmas Countdown in 2009. As Head Writer for Sesame Street, Mazzarino’s responsibilities include generating storylines for episodes, revising and editing scripts and developing new formats.

Mazzarino’s other writing credits include the preschool series Bear in the Big Blue House and the non-Muppet series Sheep in the Big City