How many movies have Heather Grierson and Seth Rogen collaborated on?

They have worked on 2 movies together! Their first movie together was Donnie Darko (2001) and was their highest rated movie together. They have not worked together since Knocked Up (2007).

Crew
Second Assistant Director
Role
Ben Stone
Crew
Executive Producer
Crew
Second Assistant Director
Role
Ricky Danforth