How many movies have Ian Roberts and John Landgraf collaborated on?

They have worked on 3 movies together! Their first movie together was Reno 911!: Miami (2007) while their highest rated movie together was Reno 911!: It's a Wonderful Heist (2022). They have not worked together since Reno 911!: It's a Wonderful Heist (2022). They are most known for their comedy films together.