How many movies have David Gallo and Jennifer Barnhart collaborated on?

They have worked on 3 movies together! Their first movie together was Sesame Street: Elmo's Christmas Countdown (2007) while their highest rated movie together was When You Wish Upon a Pickle: A Sesame Street Special (2018). They have not worked together since When You Wish Upon a Pickle: A Sesame Street Special (2018). They are most known for their fantasy films together.