How many movies have Christopher Cerf and Jim Henson collaborated on?

They have worked on 6 movies together! Their first movie together was Out to Lunch (1974) while their highest rated movie together was Free to Be... a Family (1988). They have not worked together since Street Gang: How We Got to Sesame Street (2021).

Crew
Writer
Role
Kermit / Ernie / Guy Smiley / Person with Cue Card (voice)