How many movies have David Duchovny and Gillian Anderson acted in together?

They have worked on 3 movies together! Their first movie together was Akte X Intern - Was Sie schon immer wissen wollten (1998) while their highest rated movie together was The X Files (1998). They have not worked together since The X Files: I Want to Believe (2008). They are most known for their science fiction films together.