How many movies have Kitten Natividad and Roger Ebert acted in together?

They have worked on 2 movies together! Their first movie together was Up! (1976) and was their highest rated movie together. They have not worked together since Beneath the Valley of the Ultra-Vixens (1979).

Role
The Greek Chorus (as Francesca 'Kitten' Natividad)
Crew
Original Story