What other movies do you recommend for fans of this one?

Grimm Love.

It's based on a similar real-life story to this movie. Basically, one guy wants to eat someone and finds another guy who wants to be eaten. One of my favorites.

It's based on Armin Meiwes.

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I recently saw Another Earth (http://www.imdb.com/title/tt1549572/combined), which like Downloading Nancy, is about two broken people connecting.

Alexandra's Project. great movie with a similar setup. It used to be on YouTube for free. You should check there first