One popular atheistic movie is “Zeitgeist,” a movie which purports (basically) to show that Christianity is made up , among other things.
As Peter Van Inwagen once said, it’s better to be right than original (irony? he wrote this in An Essay on Free Will), so I suggest anyone interested in refuting this farce of a “documentary” should go listen to Glenn Peoples’ podcast on the topic, found: HERE. Also, check out this great article which breaks Zeitgeist down point-by-point: HERE.
Those interested enough to check it out, I recommend watching the documentary, then listening to the podcast. Peoples really does an excellent job taking it down.