How many movies have Justin Theroux and Will Ferrell acted in together?

They have worked on 6 movies together! Their first movie together was Zoolander (2001) while their highest rated movie together was Live in Front of a Studio Audience: The Facts of Life and Diff'rent Strokes (2021). They have not worked together since Live in Front of a Studio Audience: The Facts of Life and Diff'rent Strokes (2021). They are most known for their comedy films together.