The satirical documentary is not a genre known to be friendly to religious faith. See, for example, my posts on Bill Maher’s Religulous (here and here). Michael Moore pioneered this type of documentary—NOVA meets Saturday Night Live—with Roger & Me in 1989. The genre relies heavily on ironic juxtapositions and gotcha moments.
While I have nothing against a little satire, the style and technique of such documentaries limit how deeply they can engage an issue. These limitations apply to Ben Stein’s Expelled: No Intelligence Allowed (2008), though Stein’s perspective is antithetical to Maher’s: it’s secular orthodoxy he’s skewering.
The point of departure for the documentary is the dismissal of several faculty members from various universities across the country (George Mason, SUNY Stony Brook, Baylor, and Iowa State, as well as the Smithsonian Institute). These professors were allegedly too sympathetic to “intelligent design”. The film doesn’t do much to help us judge the merits of intelligent design theories, but Stein’s point is not so much about the validity of the theory itself as it is about academic freedom.